Question Detail

PHY 102 Current Electricity Objective Question
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Question

How is current density (J) defined for a uniform current flow in terms of electric current (I) and cross-sectional area (A)?
Options
A J = I * A
B J = I / A
Correct Answer
C J = A / I
D J = I^2 / A
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 4 explicitly states, "The current density is defined as electric current per unit cross-sectional area. For a uniform current flow, we have, J = I / A".

Hint

Think about "density" as something per unit area or volume.

Question Info

Course: PHY 102
Topic: Current Electricity
Type: Objective
Difficulty: Not specified
Question 656 of 1819
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