A resistor is connected across the terminals of an ideal battery
PHYSICS · Single correct · A Level · Physics · Electricity · Electricity
Problem
A resistor R is connected across the terminals of an ideal battery. A second wire of negligible resistance is then attached directly between the two nodes on either side of R, forming a bypass around the resistor. Which of the following correctly describes the resulting circuit and the potential difference across R?
(a) Closed circuit; the potential difference across R equals the battery’s emf.
(b) Short circuit; the potential difference across R is equal to zero.
(c) Closed circuit; the potential difference across R is equal to zero.
(d) Closed circuit; the potential difference across R is half the battery’s emf.