A rectangular loop of length (i) 35.0 cm, width (w) 22.0 cm and resistance 0.150

Question

A rectangular loop of length (i) 35.0 cm, width (w) 22.0 cm and resistance 0.150 ohm moves at a constant speed of 12.0 cm/s in the +x direction as shown below. The loop has 125 turns, and it moves into a region of uniform magnetic field pointing into the page with a magnitude of 8.50 Tesla. When the loop is entering the magnetic field region and halfway immersed in the field, determine (a) the induced EMF in the loop, (b) the direction of induced current and (c) the magnitude and direction of the magnetic force acting on the loop as a result of the induced current. (d) Also, describe what happens to each of your answers to (a), (b) and (c) once the loop is fully immersed in the uniform magnetic field.

Explanation / Answer

a)

EMF induced

E = NBVw

E = 28.05 V

b)

anti clock wise current

c)

force will be towards left

F =N i w B

i = E/R

so

F = 43711.25N

d)

no flux change

so all above a b c will be zero

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