Question

A rectangular coil with resistance R has N turns, each of length and width ar as shown in Figure P31.29. The coil moves into a uniform magnetic field B with constant velocity. What are the magnitude and direction of the total magnetic force on the coil (a) as it enters the mag- netic field, (b) as it moves within the field, and (c) as it leaves the field?

Answer 1

Answer 2

(b) within the Mofield when the coil w more a the inside the magnetic field, the flux will not change through will be generated hence no accent. it. Hence no ens & a I 5o. FSI (lensus) B on the coil. go no force will be act Its of () when it will leave the M. fild og As the coil leaves me filld, flux will start to decrecases through the coil Due to this change in this eny will some. generate which causes, current in the cil but in opposite direction. 1. E NBWV 25 GR R , Hence the amcrent will be same, but of force dian will change. FAB - Ngawen New NB2 en v feo & Ng²ewv are & Nowav N922V 407 5 hence the coil. outward As the extend forces to are acting expand. will