MasteringPhysics CH28-1 BEhttp//session.masteringphysiecs.com/myct/temView?assig
ID: 1352413 • Letter: M
Question
MasteringPhysics CH28-1 BEhttp//session.masteringphysiecs.com/myct/temView?assignmentProblemiD-51696812 roem Apple Yahoo! Google Maps YouTube Wikipedia News(12), Popular, MaststingPhysicsC Search TetbooksIC Physcs with Calculus 3- 13th CH28-1 Problem 28.65 Problem 28.65 Part A Two identical circular, wire loops 48.0 cm in diameter each carry a current of 2.00 A in the same direction. These loops are parallel to each other and are 22.0 cm apart Line ab is normal to the plane of the loops and passes through their centers. A proton is fired at 3000 m/s perpendicular to line ab from a point midway between the centers of the loops Find the magnitude of the magnetic force these loops exert on the proton just after it is fired Submit My Answers Give UpExplanation / Answer
Let B be the magnetic field caused by one ring
Then 2B is the resultant magnetic field when the currents in those rings are of same direction
2B = 2 x µoIR2/2(x2 +R2)3/2
= 4 x 10-7 x 2 x 0.242 / (0.112 + 0.242)3/2
= 1.446912 / 0.01840
= 78.63 x 10-7 T
F = qv2B
= 1.6 x 10-19 x 3000 x 78.63 x 10-7
= 0.377 x 10-20 N