Motional EMF
At t = 0, a rectangular coil of resistance R = 2 W and dimensions
W = 3 cm and L = 8 cm enters a
region of constant magnetic field B = 1.6 T directed into the screen as shown.
The length of the region containing the magnetic field is LB = 15 cm.
The coil is observed to move at constant velocity v = 5 cm/s.
What is the force required at time t = 0.8 sec to maintain this velocity?
F(0.8 sec) = N
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