The diagram below show a coil connected to a centre zero galvanometer $G$ . The galvanometer shows a deflection to the right when the $N$ -pole of a powerful magnet is moved to the right as shown. Does the direction of the current in the coil appear clockwise or anticlockwise viewed from this end $A$ ?

The direction of induced current at end

A

is anti-clockwise.

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The direction of induced current at end

A

is clockwise.

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The direction of induced current at end

A

is first clockwise and then anticlockwise.

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The direction of induced current at end

A

cannot be determined.

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Solution

The correct option is A The direction of induced current at end $A$ is anti-clockwise.
By lenz's law, the direction of induced current will be such that it will oppose the motion of magnet towards the coil. By this logic, the coil as seen from end A will appear as a north pole. This appears when anticlockwise current (as seen from end A) is induced in the coil.

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The diagram below show a coil connected to a centre zero galvanometer G. The galvanometer shows a deflection to the right when the N-pole of a powerful magnet is moved to the right as shown. Does the direction of the current in the coil appear clockwise or anticlockwise viewed from this end A?