# Resistors in series and parallel; power

### Explanation of question 13

A p.d. of 15V is applied across the ends of two resistors connected in parallel. 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

Total power is always the sum of the individual powers, so P = 0.5 + 2 = 2.5 W

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