# Resistors in series and parallel; power

### Explanation of question 12

A p.d. of 15V is applied across the ends of two resistors connected in series. The power dissipated in the resistors is 0.5W and 2W respectively. The total power dissipated will be

1. 2.5W
2. 2W
3. 1.5W
4. 0.4W

The answer is :- 1

In any circuit, total power is the sum of individual powers, therefore, P = 0.5 + 2 = 2.5 W

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