Heater 1 takes to boil a given amount of water

PHYSICS · Multi-part · A Level · Physics · Electricity · Electricity

Problem

Heater 1 takes

3\text{ min}

to boil a given amount of water, while heater 2 takes

6\text{ min}

. Find the time taken if the potential difference

V

is the same in all cases and (a) they are connected in series. (b) they are connected in parallel.