(i) Write the functions of a transformer . State its principle of working with the help of the a diagram mentions various energy losses in this divice .
(ii) The primary coil of an ideal step up transformer has 100 turns and transformation ratio is also 100. The input voltage and power are respectively 220 V and 100w. Calculate
(a) number of turns in secodary
(b) current in primary
( c) voltage across secodary
(d) current in secondary
( e) power in secondary

Explanation

### Step-by-Step Solution

#### (i) Functions of a Transformer and Principle of Working

1. **Definition of a Transformer**: A transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

2. **Functions of a Transformer**:
- **Voltage Transformation**: It can step up (increase) or step down (decrease) the voltage levels in AC circuits.
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