Understand the principle of electromagnetic induction.

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Here's the solution to question 20 a) (i):

Understand the principle of electromagnetic induction.
Electromagnetic induction states that a current is induced in a conductor when it is exposed to a changing magnetic field.
Analyze the given scenario.
The bar magnet is stationary in the coil. This means there is no change in the magnetic field passing through the coil.
Determine the observation on the galvanometer.
Since there is no change in the magnetic field, no electromotive force (EMF) or current will be induced in the coil. A galvanometer detects electric current.

The observation on the zero centre of the galvanometer when the bar magnet is stationary in the coil is:
The galvanometer shows no deflection (it remains at zero).

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