Question

1) When is the force experienced by a current carrying conductor placed in a magnetic field largest?

2) A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is:

1) pushed into the coil? 2) withdrawn from inside the coil? 3) held stationary inside the coil?

Answer 1

1-

The force experienced by a current-carrying conductor is largest when the directions of magnetic field and electric current are perpendicular to each other.

2-

(i)
The galvanometer will show a deflection one way.
(ii)
The galvanometer will show a deflection opposite to that in case(i).
(iii)
There will be no deflection in the galvanometer.