Question

Two circular loops `P` and `Q` are concentric and coplanar as shown in figure. The loop `Q` is smaller than. `P`. If the current `I_1` flowing `i` loop `P` is decreasing with time, then the curren `I_2` in the loop `Q`

A. flows in the same direction as that of `P`
B. flows in the opposite direction as that of `Q`
C. is zero
D. None of the above

Answer 1

Correct Answer - A
Magnetic field through `Q` (by `I_2)` is downwards. By decreasing `I_1`, downward magnetic field through `Q` will decrease. Hence, induced current in `Q` should produce magnetic field in same