A purely resistive heater is connected to a sinusoidal AC source
PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences
Problem
A purely resistive heater is connected to a sinusoidal AC source. If the peak voltage of the source is doubled while the resistance of the heater remains unchanged, the average power developed in the heater will
(a) remain unchanged
(b) become twice its original value
(c) become four times its original value
(d) become half of its original value