Question Detail

PHY 102 Current Electricity Objective Question

Question

How is the electromotive force (e.m.f.) of a battery defined according to the text?
Options
A The current flowing through the circuit
B The total energy dissipated in the circuit
C The potential difference across the terminals when no current is flowing
Correct Answer
D The resistance of the battery
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 10 defines e.m.f. as "the potential difference across the terminals of a battery (or any other generator) on open circuit, that is, when no current is flowing."

Hint

EMF is related to the maximum potential difference a source can provide, typically measured when it's not delivering current.

Question Info