PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Heater A is rated 500W and Heater B is rated 1000W. Both are operated for 5min continuously. Which statement about the energy (work done) by the heaters during this period is correct?
(a) Both heaters do the same work.
(b) The work done cannot be compared with the given data.
(c) Heater B does twice the work done by Heater A.
(d) Heater A does twice the work done by Heater B.