PHYSICS · Single correct · A Level · Physics · Electricity · Electricity
Problem
Two heaters, A and B, have resistances 5Ω and 20Ω respectively. Each is connected separately to a 10V battery for the same duration. What is the ratio of the electrical energy produced in heater A to that in heater B?
(a) 1 : 1
(b) 4 : 1
(c) 1 : 4
(d) 16 : 1