Question Detail

PHY 102 Test Compilation PHY 102 18 Objective Question
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Question

Suppose we have a wire with cross-sectional area A, length L, and a charge Q flows through the wire in a time t. What is the current density?
Options
A L/(At)
B Q/(At)
Correct Answer
C Q/(Lt)
D Q/L
Correct Answer

Option B is the correct answer.

Detailed Explanation

Current density J = I/A, and since I = Q/t, current density is J = Q/(At).

Hint

Start from J = I/A and substitute I = Q/t.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 18
Type: Objective
Difficulty: Not specified
Question 1169 of 1819
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