If the north poles of two bar magnets are brought close to eachzn 4 jq(r 8/mkt4kde8l other, the magnets wi4/k mnq88(ljd tzk e4rll

  If the south pole of one bar magnet is brought near the north5 d 99zqxgw ire*d csfk;xm5* 14wnv:e pole of a second bar mawmd 4 dvckn irf9qxew1*xge9:5*sz;5gnet, the two magnets will

  If a bar magnet is divided into two equal3 t7 0fzhm*cz unq3f+t pieces,

  The Earth's geographic Nor:s gs iqqp)zvs3;d:d6 th Pole is magnetically a

  The south pole of a magnet points toward cdyf0. 5 alm3xjc .v(xthe Earth's

  An electric current prj2/x 6g62o5ii ukbklwoduces

  Which of the following il )z; eef1p4pcd/o)l gs correct?

  A vertical wire carries a current straigovockk 4 5g,:rht down. To the east of this wire, the magnetic field o 5g:4cvk,k ropoints

  A horizontal wire carries a current straight toward you. From your point of , prnv1l t+-trview, th,t tnr -rl1vp+e magnetic field caused by this current

  A current carrying loop ofp mgim6/o0eace)0.s:+ukk wiq3ju c8 wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwe ji83mp0kc 06 uoqi/e:+sk au)cmw. gise sense. What is the direction of the magnetic field caused by this current, outside the loop? The magnetic field

  A current carrying circular loop of wire lies flat on a table top. When viewei8r21w d;eozzh /qhz9d from above, the current moves around the loop in a counterclockwise sense. What is the direction of the magnetic field caused by this current, insidz9 rzhi qdwo1h e8/;z2e the loop? The magnetic field

  The SI unit of magneticjej pcn 588,/jtar g0x field is the

  1 T is equivalent to.mdx/+ rxi) jo

  The direction of the force on a current-carrying wire in a5bzhbh6j x7f6;) cs fs magnetic field is described by which of thfzhb5 h; j )6cf76sbsxe following?

  The force on a current-carrying wire in a magnetic field is the strongesxfslrt1 id3mlp)8a : 0t when

  The force on a current-carrying wire in a magnetic aa7)vgw.z9a v0rxhle; hy 89 +bcp*dzfield is equal to zero when

  A vertical wire carrievvw-gnb 87ykvjp-t*9zfar: 5s a current straight up in a region where the magnetic field vector points due north. What is the direction of the resulting force on this currenbnpkagrwz- -v *8 :y9fv7 j5vtt?

  A charged particle moves and experiences1c 0 slhv;gzu5ioy t xdcd84:( no magnetic force. From this we can conclude th5su0 ztx h (d:yc;48d lviogc1at

  A charged particle moves with a constant speed through a region where a unifork0;eo4ebdb/vbt0m) p-)gwy.yej uym/jx / .sm magnetic field is present. If the magnetic field points straight upward, the magnetic force acting on thiswb)eb; bsy.y/yjj p 0kmo4u.v/0ge/)dx t-e m particle will be maximum when the particle moves

  A charged particle movqnh5bo61/oe-eq 7 8vruwnvv ( es across a constant magnetic field. The magnetic force on this partic nv v1-qn qv8 rouhe76b/w5(eole

  A charged particle is injected into a q9 w0 ,3qbaeoikc 45jvuniform magnetic field such that its velocity c0ijvobeq5w439qa, kvector is perpendicular to the magnetic field vector. Ignoring the particle's weight, the particle will

  A charged particle is observed traveling yl pb/+atcjaim 5enway(ni1 1+8a 3n*in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular path ltab1 j/annna8 *ym yipw ei(c++3a15 would be

  A particle carrying a charcz,dtxl 5o/ +9vja8t uge of +e travels in a circular path in a uniform magnetic field. 9zc do5x ttu j,a8v+/lIf instead the particle carried a charge of +2e, the radius of the circular path would have been

  At a particular instant, an electron moves eastward at spe9wf o4qp3 usnk .vq(t1fw.0 cped V in a uniform magnetic field that is direc93p.f. v01(cnk psuo qww qft4ted straight downward. The magnetic force that acts on it is

  An electron has an initial velocity to the south but is oedh*8c-paih 7df+a,z/ ( nphzbserved to curve upward as thezad/e n hi*dhz 7+(8-ap,cphf result of a magnetic field. The direction of the magnetic field is

  An electron moving along theqgk y:vbd,5su mx(;9l +x axis enters a region where there is a uniform magnetic field in the +y direction. What is the direction of the magnetic force on the electron? (+x d;:xsvkl,u bym9g (5q to right, +y up, and +z out of the page.)

  The magnetic field produced by a long straight curre ctrgbk( bx4kgj2*b( ;nt-carrying wire is

  At double the distance from a long current-carrying ,6ek*w*62p yg yty r40nw cpiz5 nrz3vwire, the strength of the mag4c , *kzzwvyn y e2i*p60r wtnyg5p63rnetic field produced by that wire decreases to

  Two long parallel wires placed side-by-side on a horizontal table carry im i0d7e 7s,mb*0qqcgn dentical size 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 fi0 7*0 ib7dscqgnmm,e qeld at the point exactly midway between the two wires

  Two long parallel wires placed side-by-side xta07 s61d wxmon a horizontal table carry identical current straight toward you. From your point of view, the magnetic field atxxa 0tsd61wm7 the point exactly between the two wires

  Two long parallel wires carry equal currentsswsuet0i0ti2 (5 wqo: . The magnitude of the force between the wires is F. The current in each wire is now doubled. What is the maguq0 s wst i5towei(:02nitude of the new force between the two wires?

  A long straight wire carries current toward the east. A y*gbe0rx 0 lw4pg/o*lproton moves toward the east alongside and just south of the wx0yobe *g0 plwlg/r*4ire. What is the direction of the force on the proton?

  A wire lying in the plane of the page carries a current toward the bottomi :mdjwh t *uj)y3w.7d of the page. What is the direction of the magnetic force it produces on an electron that is moving perpendicularly toward the wire, also in the p)dwdwhut:m. yj*i3 7 jlane of the page, from your right?

  Two long parallel wires are placed side-by-side on a horizonr/l nj(mn* 6pztal table. If the wires carry current in the same di* /6(nnjzmprl rection,

  Two long parallel wiruay5 2r7qrw8f.i,zeg es are placed side-by-side on a horizontal table. If the wires carry current in opposite di 28a 57frzuewy,ig r.qrections,

  Consider two current-carrying circular loops. Both are m /jb4slyj+(9 jc8p9a kc)vnllade from one strand of wire and both carry the same current, but one has twice the radius of thclals/9(j4pbv +) k 89cj jlnye other. Compared to the magnetic field at the center of the smaller loop, the magnetic field at the center of the larger loop is

  Consider two current-carrying circ;or g-6n 0oe25 bzoowmsmmq)(ular loops. Both are made from one strand of wire and both carry the same current, but one has twice the radius of the otherwo( z 5 ;q-0bnegom2somro6m) . Compared to the magnetic moment of the smaller loop, the magnetic moment of the larger loop is

  The maximum torque on a m)jqi2gscu*fk4 r /w*current carrying loop occurs when the angle between the loop's magnetic moment a/*2f 4c) kgw*qsumr jind the magnetic field vector is

  When placed askew in a magnetikt* exnp.5.y6pn8mb qei6jx,1 t /vf zc field, a current carrying loop that is free to rotate in any direction will experience a torque until its magnetic moment vpjv, b/knfe iexzqxn*tty.1 5 86mp. 6ector

  What fundamental fact underlies the operation ooij8n9pve )l:f essentially all electric motors 9:on8 l)jpiev?

  A circular wire loop lies in a horizontar5* vgb(sj9d ul plane on a table and carries current in a counterclockwise direct5*gdu jv9 brs(ion 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 to 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 accelernxqtu0:b *b jr..rt2pated through a potential difference V and allowed to enter a magnetic field B, where it ibt0rj: pq 2r ut.nb*x.s 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, and R.

  A velocity selector consists of a /sk ,lze2+w udcharged particle passing through crossed electric and magnetic fields. The forces exerted by these fields are ie2w z l+ds/uk,n opposite directions, and only particles of 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 0.60 A is oriented pak)d kzc: 8a gx4jtsgr2 r:r2hphm0,d*rallel to a uniform magn :tr2hm8sx0d :,k)g r2z c kr4g*djpahetic field of
0.50 T. What is the magnitude of the force it experiences?

  A wire carries a current of 10 A in a directionk,1 6w ytknk66ug ;zcm 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 5x/ltq(ji3vv it is placed in a magnetic field 5i /3j(lvxq vtof 0.020 T? The wire makes an angle of $27^{\circ}$ with respect to the magnetic field lines.

  A thin copper rod 1.0 m long has a mass of 0.050 kg and is in a magn3 ;5of m8rg2axoxum 7ietic field of 0.10 T. W ux7xm5 2;8if aoorm3ghat minimum current in the rod is needed in order for the magnetic force to cancel the weight of the rod?

  A stationary proton is in a uniform magnetic field s7ccbws ;t a82of 0.20 T. What is the magnitudb ;c8s2sc7t awe of the magnetic force 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 wi;c* yhpwp3 keo /:rw/bth a speed 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 spen1guya ya/ *sm1bb+b .v 9cnq;ed 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 traveling due;vsi j)6tro v75hj9kn 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 ycyi)f 2 .:3czrnzn*h speed 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 of z slxo- rdg( f*ij3kh(mk37 8d$8.0 \times 10^6 \; m/s$ 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 qa cwep 4u5r19 p1;u pvxvuh84of $3.0 \times 10^6 \; m/s$ 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 du:p9iy3h rd(of 25 A. What is the magnitude of the magnetic field at ah i(9u d:rp3yd distance of 0.15 m from the wire?

  A high power line carrying 1000 A generates wha mcw0bk(n(9hz t magnetic field at the ground, 10 m away?90bw czmn hk((

  How much current must feh2uynn: z*yq/k d.9z low 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 current of 5.0 A is the95 qcw2vgk m0a5si;eq magnitude of the magnetic field due to the wire equal to the strength of the E0 q;i5gq 2cvke w9asm5arth's magnetic field of about $5.0 \times 10^{-5} \; T$?

  Two long parallel wi46,rfk drpl+ uede2q/res carry currents of 10 A in opposite directions. They are separatedplf 4u2r,/r kqd+6ee d by 40 cm. What is the magnetic field in the plane of the wires at a point that is 20 cm from one wire and 60 cm from the other?

  Two long parallel wires carry currents of 20 A and 5.0 A in opp s,qc9*v v(aezosite directions. The wires are separated by 0.20 m. What is the me9vq*cazs(v , agnetic field midway between the two wires?

  Two long parallel wires carry currents of ipa8vxs7 *ox. t ;apnzmt 7+)b20 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 contribu*)a po. t78m7np ;xaisbz+xtvtions from the two wires the same?

  Four long parallel wires each carry 2.0 A in the same;z( z(q*(ohconjq zb, direction. They are parallel 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 wires experience due to the other wires?;( * qz nz,obhc(zoq(j

  Two long parallel wires carry currents of 5.0 A and 8. )a)6d(zhsybt aw tk+)v+kqn*0 A in the opposite direction) 6 *na+khstkqy wt)(+vaz )bd. The wires are separated by 0.30 m. Find the magnetic force per unit length between the two wires.

  What is the magnetic field at the center of a circular loop of wire of radius 4.y7ycq 8k e7n iu8n3xpo25w5pwc8cl ,e0 c ceyx5 u wcpcl7qi,n8 7 8y8n3owe2kp5m when a current of 2.0 A flows in the wire?

  A solenoid 20 cm long is wound with 5000 turns of wire. dt u;t): 8rvlmza((l*v mni7g What magnetic field is produced vl:g)tad *u(8r m( ;it7nmlzvat the center of the solenoid when a current of 10 A flows?

  A solenoid with 500 turns is 0.10 m long )dl-5b drsod6and carries a current of 4.0 A. What strength of magnetic field will it have at -r5)b lod6dsdits center?

  How much current must pass through a 400 9rr2(mgg/*,s13 j u /auuol o n;qbfblturn coil 4.0 cm long to generate a 1.0-T magnetic field atf* (ll29u/goma,3/r ;g sbb1qnjuru o the center?

  How many turns should a 1b .j7/ivwvwa;0 ja w8rr xd;dpi..0w9o w/ jww0-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 120 tur iu.o cn8slz0qc(z r31ns that carries 6.0 A if itrui ccq30 z8l(s z.on1s dimensions are 4.0 cm x 8.0 cm?

  A circular loop of wirs4anbu10nl09 j jd -hx-d 6iuje of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque w 9ndjj6-d jixb h-lau41s00 unhen the plane of the loop is perpendicular to the magnetic field?

  A circular loop of wire ofvv8v 5ss3rvtkg 5m7 hn1 p)hw* cross-sectional 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 current of 2.0 A is in a magneticn-uj,d3ti/ rx8l0p6gc m9 n vq field of 3.5 T. The loop has aixrnj3 /l, vpu 908qng-cdmt6n 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 uniform magnetic fie2ukf.d: g;vfy4vh2btyb -ba2 ld of 0.30 T. k42;2bygvu t f 2b:h.fd abv-y The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is parallel to the magnetic field?

  A circular loop of wire of radius 0.50 m is in a uniform g1:1 xecdsc2- wml9tsmagnetic 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 ixc:1sl1mwtd-c e2 s9 gs parallel to the magnetic field?

  A circular wire loop of t5stmhbtitkbk c3jzzle( 201 1w463 earea $0.25 \; m^{2}$ 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 stef 09m) 9tnls .axlw z3u1lu0ingle-charged particle (charge e) has a speed 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 velocity5w ig .qe zdnc0n)c+u5 $6.9 \times 10^6 \; m/s$ 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 thb*1u8reqoon- 6; shu ven moves into a magnetic field of 0.040 T. What is the radius of the proton's rue;1n*6qb husr-o8o vesulting orbit?

  A proton is accelerated from4 kd4x6 cv:tna rest through 500 V. It enters a magnetic field of 0.30 T oriented perpendicular to its direction of motion. Det4d6:tn4xk vcaermine the radius of the path it follows.

  A beam of electrons is ac m q9*1/p/vi brq7,)gwdj rxdacelerated through a potential difference of 10 kV before entering a velocity selector. If the B-fi9 w dd/grpb7)qmqi*1rj xv, /aeld 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?