Question Detail

PHY 102 Test Compilation PHY 102 16 Objective Question
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Question

The emf of a battery is equal to its terminal potential difference:
Options
A under all conditions
B only when the battery is being charged
C only when a large current is in the battery
D only when there is no current in the battery
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

The terminal potential difference (V) of a battery is related to its electromotive force (EMF, E) and internal resistance (r) by the equation V = E - Ir, where I is the current flowing through the battery. If there is no current (I = 0), then the voltage drop across the internal resistance (Ir) is zero, and the terminal potential difference V becomes equal to the EMF, E.

Hint

Consider the relationship between terminal voltage, EMF, current, and internal resistance of a battery.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 16
Type: Objective
Difficulty: Not specified
Question 1056 of 1819
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