A rectangular loop of wire is placed midway between two long straight parallel c

Question

A rectangular loop of wire is placed midway between two long straight parallel conductors as shown. The conductors earn- currents i_1 and i_2 as indicated. If i_2 is increasing and i_2 is constant, then the induced current in the loop is: A) zero B) clockwise C) counterclockwise D) depends on i_1 - i_2 E) depends on i_1 + i_2 The figure shows a bar moving to the right on two conducting rails. To make an induced current i in the direction indicated, a constant magnetic field between the rails should be in what direction? A) Right B) Left C) Into the page Out of the page E) Impossible, cannot be done with a constant magnetic field

Explanation / Answer

here,

when i1 is increasing and i2 remains constant

there is no change in flux due to i2

so, the induced current is only due to i1

as the current is increasing ,the flux throught the loop is also increasing

using Lenz's law

the induced current is C) counterclockwise direction

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