Answer the following questions:
(i) Name the principle on which the functioning of a transformer depends.

Explanation

To answer the question regarding the principle on which the functioning of a transformer depends, we can break down the explanation into clear steps.

### Step-by-Step Solution:

1. **Understanding Transformers**: A transformer is an electrical device used to change the voltage level in an alternating current (AC) circuit. It consists of two coils of wire, known as the primary coil and the secondary coil, which are wound around a core.

2. **Electromagnetic Induction**: The functioning of a transformer is based on the principle of electromagnetic induction. This principle states that a changing magnetic field can induce an electromotive force (EMF) in a coil of wire.

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