If the north poles of two bar magnets are brought close to -4sbkgnb q-inm*pp2uvkk:( 7px i/z 5each other, the magnets wsvkubp(k-x/np5k q4 2p: g7*nibi m -zill

  If the south pole of one y4kyo1m wg (q7bar magnet is brought near the north pole of a second bar magnet, the to w y1k4m(yq7gwo magnets will

  If a bar magnet is divi8ckmb k 5zr htz:s-8l8ded into two equal pieces,

  The Earth's geographic Nort z 3t 3j6lqqt9o)0 )arzul;htfh Pole is magnetically a

  The south pole of a magnet points toward the Ea;oetlr2rc(7kk0e *gtbx) i c7rth's

  An electric current mt3usr)a63c j:w /, -+n.bkxfug 3x3kedlga e produces

  Which of the following is 4x ps4;;fjhap correct?

  A vertical wire carries a current straight down. To the east of this wireo :wmdp6nu7t 2, the magnetu67pmtd2 nw: oic field points

  A horizontal wire carries a current straight toward you. From your po94 k-y, u xhfrab9z3.nw+ sd66shgp vdint of view, the m4v-pzxy b3u,9s 9kh6aw dr6df s+g.nhagnetic field caused by this current

  A current carrying loop of wire lies flat on a table top. ,6gu p. vgc:tj When viewed from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by thgv tcg:,6upj .is current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat oph,gtdayz t5(w t,b) *n a table top. When viewed from abov,h*(payt5dt g), wzb te, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field

  The SI unit of magnetic fielyo xt bbee xtz1t7f0+6 0t*c(xd is the

  1 T is equivalent to;ac0+ ,dl gsfg

  The direction of the force on a current-carrying wire in a: :,w wu7ptoht magnetic field is described by which of the w,: u7pwt:hotfollowing?

  The force on a current)l3/xno irz 2 s0x/tqr-carrying wire in a magnetic field is the strongest when

  The force on a current-carrying wire in a magnetic field is equal to zero wgt -n7b 9tz0b( pp i6aftbw9u+hen

  A vertical wire carriexhk8q)+oe2dt6 -ush(k(5ez 1bmz vass a current straight up in a region where the magnetic field vector points due n 6q51b+z(s(dvoe htezakm8u )2h -xks orth. What is the direction of the resulting force on this current?

  A charged particle moves and experiences no magnetic forv uq6ds k84+rmce. From this we can conclusdrquk6v8m4+ de that

  A charged particle moves with a constant speed through a region where a fhq6)wc s)pl/;)oa nb4zozv ;uniform magnetic field is present. If the magnetic field points straight upward, the magnetios))h4an;cb zflzov) 6p/; q wc force acting on this particle will be maximum when the particle moves

  A charged particle moves across anjl ;liobvk4)/o 7il12c 2 zjl constant magnetic field. The magnetic force on this particle1v oj)7z ll22j;b iln l/ci4ko

  A charged particle is injected into a uniform magnetic f/ul/u dypl 2v,ield such that its velocity vector is perpendicular to2ud/,u l /pylv the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling in a circular5.i3tiiqc;71g d khgn.wm 5 6vb5 mxiy path in a uniform magnetic t7dixnk563ybi q c1.;v.mh 5mgw 5iigfield. If the particle had been traveling twice as fast, the radius of the circular path would be

  A particle carrying a charge of +e travels in a circular path in 6)tugnoi: glj o dw+/*a uniform magnetic field. If instead the particle carruid*to:n )/jlw+gog6 ied a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at spee(t txzt-e/lms (, k4gjd V in a uniform magnetic field that is directed straight downward. The e t/zx-tg mt(4sjlk,( magnetic force that acts on it is

  An electron has an initial velocity to the south but is,p3cezi4vyk/du o(b * observed to curve upward as the result of a magneticb/*(zp ic3 d,uykveo4 field. The direction of the magnetic field is

  An electron moving along the +x axis enters a region where therejs. n/0di; 2h+p vwgta is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x to rhas/wdt0n+;2v i. p gjight, +y up, and +z out of the page.)

  The magnetic field produced by a long straight current-carrying gbdf*l) nr- 7qwire is

  At double the distance from a long current-carrying wire, the9vk17r:)ra(esjfgq w strength of the magnetic field produced b9re7gavrj1kq s (w): fy that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry ide7/n sc2rbz(ij ntical 7b/n is2(crzjsize currents in opposite directions. The wire on your right carries current toward you, and the wire on your left carries current away from you. From your point of view, the magnetic field at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side on a eynachu4i3/5n 0k1u phorizontal table carry identical current straight toward you. From your point of view, the magnetic field atnc0h41u y knp/u5a 3ie the point exactly between the two wires

  Two long parallel wires carry equal currents. The magnitij dkx**+ji7w 7v4hkkude of the force between the wires is F. The current in each wire is now doubled. What isk 7i*j7xdkkjh4vi w+* the magnitude of the new force between the two wires?

  A long straight wire carries cur*iuj: a, h:zj((udtk z /8woh.3:rv ma uiy0lyrent toward the east. A proton moves toward the east alongside an3zdt(kuz: hl,* jov i(uh:/au.rjyw8m0 :ayid just south of the wire. What is the direction of the force on the proton?

  A wire lying in the plane o:)nlw) ;qib61g. ur.hl i eweh7rfct,f the page carries a current toward the bottom of the paf6hn7. ig elt bw.chw);lieqr )ru1: ,ge. What is the direction of the magnetic force it produces on an electron that is moving perpendicularly toward the wire, also in the plane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizontal table. kisu (jm 1h*g6If the wires carry current in the same6m1ug(is *h jk direction,

  Two long parallel wires are placed side-by-side on a horizontal table. r :uuot10 i/5qv avi-gIf the wires carry current in opposiq5v-iart 1 ovig/0u:ute directions,

  Consider two current-carrying circular loops. Both are made fj / 5ewvuuu.)srom one strand of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic fieldeusj./5w uu )v at the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circular loops. Both wz.*o 4jvz dzmx86+amare made from one strand of wire and both carry the same current, but one ha mz*.z dxm8a 4wjvo+z6s twice the radius of the other. Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a current carrying loop occurs when the angle between the)zj kn9-wu+hjhw)z ,k loop's h + j)zwk,jkuw-nh9z )magnetic moment and the magnetic field vector is

  When placed askew in a magnetic fieldt(tl,9svn b4bg5.xz( .mvzru0 kupc7 , a current carrying loop that is free to rotacrs, lvbv.bunu4 09x t(z.mg5t kpz (7te in any direction will experience a torque until its magnetic moment vector

  What fundamental fact underlies the operation of essego n -n z-kx9 jy3vd5lm;e8n(r)adzal dd* n9;ntially all electric motorsd3;lr(azn jmaxy*nez) n 8 - vnd599d -gl;okd?

  A circular wire loop lies in a horizm8y nqkdeo:7 xj43( xsontal plane on a table and carries current in a counterclockwise direction when viewed from above. At this point, the Earth's magnetic field points to the north and dips below the horizontal. Which side of the coil tends mk74dy3xj(nx8: ose qto lift off of the table because of the torque caused by the currents interaction with the magnetic field?

  In a mass spectrometer a particle of mass m and charge q is accelerated througd6jcj l6irc9; h a potential difference V and allowed to enter a magnetic field B, where it is deflected in a semi-circular path of radius R. The magnetic field is uniform and oriented perpendicular to the velocity of the particle. Derive an expression for the mass of the particle in terms of B, q, V, 6cl6cij; r9jd and R.

  A velocity selector consists of a char:+ba*rz0 ;o7 b ynjbhsged particle passing through crossed electric and magnetic fields. The forces exerted by these fields are in opposite directions, and only particles b;s* r obahj70nz b:+yof a certain velocity will move in a straight line. In the following, disregard the magnitudes of the fields. In a velocity selector, the particles move toward the east, and the magnetic field is directed to the north. What direction should the electric field point?

  A 2.0-m wire carrying a current of 0.600q ir 2fc:ba5h, k9lrb A is oriented parallel to a uniform magnetic fiel,h qrb2f a k9cb0ir:5ld of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current 17twg w,b: yif9po/ dskop28dof 10 A in a direction of $30^{\circ}$ with respect to the direction of a 0.30-T magnetic field. Find the magnitude of the magnetic force on a 0.50-m length of the wire.

  What is the force per meter on a straight wire carrying 5.0 A when it is placed jnxi,w2d6o;y: n0tak)ea s k4in a magnetic field of 0.020 T? The wire 6,x0w d;n2kt yao)js:e4iaknmakes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass o+ 0hdl2na h+no b(yb,tf 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to cancel the weight of the rod+ ny+nloh,h b(a t02bd?

  A stationary proton is in a uniform ma) a x16 ynkhm7c/1mp1ed5 rhghgnetic field of 0.20 T. What is the magnitude of the magnetic force)y ch1g1 k6/ma7x 5hmnr1hedp on the proton?

  A proton moving at $4.0 \times 10^4 \; m/s$ horizontally enters a region where a magnetic field of 0.13 T is present, directed vertically downward. What force acts on the proton?

  An electron moves with a rs3clt) a1 6kvspeed of $5.0 \times 10^4 \; m/s$ perpendicular to a uniform magnetic field of 0.20 T. What is the magnitude of the magnetic force on the electron?

  A proton travels at a sprnsg uyca9*1z/8v *fweed of $5.0 \times 10^7 \; m/s$ through a 1.0-T magnetic field. What is the magnitude of the magnetic force which acts on the proton if the angle between the proton's velocity and the magnetic field vector is $30^{\circ}$?

  An electron travelingfcoe9 e9y8h +k .yano6 due north with speed $4.0 \times 10^5 \; m/s$ enters a region where the Earth's magnetic field has the magnitude $5.0 \times 10^{-5} \; T$ and is directed downward at $45^{\circ}$ below horizontal. What force acts on the electron?

  An electron moves with a speedjufls l og4ca -/:-e-w of $8.0 \times 10^6 \; m/s$ along the +x axis. It enters a region where there is a magnetic field of 2.5 T, directed at an angle of $60^{\circ}$ to the +x axis and lying in the $xy$ plane. Calculate the magnetic force of the electron.

  An electron moves with a speed ofnmk5 n .fh+rhi6oec 1gc09)nf $8.0 \times 10^6 \; m/s$ along the +x axis. It enters a region where there is a magnetic field of 2.5 T, directed at an angle of $60^{\circ}$ to the +x axis and lying in the $xy$ plane. Calculate the acceleration of the electron.

  A proton has a speed lu:r7q* qys ,lof $3.0 \times 10^6 \; m/s$ in a direction perpendicular to a uniform magnetic field, and the proton moves in a circle of radius 0.20 m. What is the magnitude of the magnetic field?

  A very long straight wire carries a current ovengi,a l+sa55*evv-)q1l n ff 25 A. What is the magnitude of the mae ,la)g-ie5l1v5* sa+vvnfq ngnetic field at a distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates what dh3zv(* ywp/4dme z5qmagnetic field at the ground, 10 q3wyz/ve*z hd(pd54mm away?

  How much current must i)blc*s nq0 q,7hv7oy 1*axxx flow for $1.0 \times 10^{-3} \; T$ of magnetic field to be present 1.0 cm from a wire?

  At what distance from a long straight wire carrying a:f/iq*r qts3+pybf-n current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength os/b i:pqqf tr -fn*3+yf the Earth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wires carry currents of 10 A in opposite directions.dq1gjer9-8dv c 9/taub1jgeh+/n hg 4 They are separated by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from onj g8t4 9ndqegg h1evdhru +jb/19a/c-e wire and 60 cm from the other?

  Two long parallel wires carry cur:ukr 3 lk.1:bdko1lg brents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the mlg1o.b1r k u k3d:bl:kagnetic field midway between the two wires?

  Two long parallel wires carg br u0f tgzy2x./y :fl.mn+2pry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. At what point between the two wires are the contributions from 22mb: p rffxy.uztlg +n ./0ygthe two wires the same?

  Four long parallel wires each carry 2.0 A in the same direction. They are parallt0w4vlekyy;vor 4g296t,tb--jil xr-3hfc bel to the z-axis, and they pass through the corners of a square of side 4.0 cm positioned in the x-y plane. What magnetic field does one of the- cryfv,tb0b yt 24lrw lioxh364 g-ej9kt- v; wires experience due to the other wires?

  Two long parallel wirea (1;sbe ssyv3s carry currents of 5.0 A and 8.0 A in the opposite direction. The wires are separated by 0.30 m. Find the mas1sv3y a( sb;egnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of rttbo2) km-1wiadius 4.0 cm when a current oi)-2mt btw o1kf 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 500rl(sjk paa148* 6 naxx0 turns of wire. What magnetic field is produced at the center of the solenoid when a current o(6r*an14 alx sxk aj8pf 10 A flows?

  A solenoid with 500 turns is 0.: 6/nuw oy,ifg10 m long and carries a current of 4.0 A. What strength of magnetic field will it haw6u ino/yfg:,ve at its center?

  How much current must pass through a 400 turn coil 4.0 cm long to generat6+(no:t-hdz9s n:yu7b jssahe a 1.0-T magny6dbj9as(no nh: +uzt -7:sshetic field at the center?

  How many turns should a jgwn4 kek;-6k tl;9ew10-cm long solenoid have if it is to generate a $1.5 \times 10^{-3} \; T$ magnetic field on 1.0 A of current?

  What is the magnetic moment of a rectangular loop of 1jr2 o7xh+ -/ dwlp2pdi20 turns that carries 6.0 A if its dimensionsixp2/wd+ 2hjpld7 r o- are 4.0 cm x 8.0 cm?

  A circular loop of wire of radius 0.50 m is in a uq jxbeo4vvmhj;wq -2 +mnk,0 *niform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular -kme w n*ojq; 2q+v4hb0vx,jm to the magnetic field?

  A circular loop of wire of cross-sectional0gfx-6.rk*gpfuj - vu area $0.12 \; m^{2}$ consists of 200 turns, each carrying 0.50 A current. It is placed in a magnetic field of 0.050 T oriented at $30^{\circ}$ to the plane of the loop. What torque acts on the loop?

  A circular loop carrying a rw:*;48xzsg8k je,usbf8 lx u current of 2.0 A is in a magnetic field of 3.5 T. The lk l8g:s suj8,f4r ux;*w8bxez oop has an area of $0.12 \; m^{2}$ and its plane is oriented at a $37^{\circ}$ angle to the field. What is the magnitude of the magnetic torque on the loop?

  A circular loop of wire of radius 0.50 m is in a uniforc3etzn -cr ti2ao /7*ym magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of thric 3/7*toeytnc2z -a e loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.33zm0 sh 2g40puf,tjrll41s bd,tn. cz0 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is pglcs,b r z201,j ttulmfn 40pszd3h4. arallel to the magnetic field?

  A circular wire loop of s:)cuq:p k:lj (f(uq1pm p1 qoarea $0.25 \; m^{2}$ carries a current of 5.0 A. The coil lies in a horizontal plane with the current flowing in the counterclockwise direction when viewed from above. At this point, the Earth's magnetic field is $1.2 \times 10^{-4} \; T$ directed $60^{\circ}$ below the horizontal. What is the magnitude of the torque which acts on the loop?

  In a mass spectrometer, a single-charged particle (charge e) has a speevle),0, sj pqpd of $1.0 \times 10^6 \; m/s$ and enters a uniform magnetic field of 0.20 T. The radius of the circular orbit is 0.020 m. What is the mass of the particle?

  A doubly charged ion with velocikuat*a5 0x++yva*z ukty $6.9 \times 10^6 \; m/s$ moves in a path of radius 30 cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion?

  A proton travels through a potential of 1.0 kV and then moves i/h.ppsmgbgr7va( .w o*o4ih -nto a magnetic field of 0.040 T. Whw bp-ghsm i.o.7(g/p*o4havrat is the radius of the proton's resulting orbit?

  A proton is accelerated fr3w*0 ehwdy chpp ml1lro v9:hb1:uy6/om rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendice6p * :hyd109whl:3cbp/vol y wrmu1hular to its direction of motion. Determine the radius of the path it follows.

  A beam of electrons iu l;,zh2de yorw9i:, swtv9x+s accelerated through a potential difference of 10 kV before entering a velocity s 9z:,xo+9sytlr;uhd, vi w2e welector. If the B-field of the velocity selector has a value of 0.010 T, what value of the E-field is required if the particles are to be undeflected?