MCQ
Current density of a conductor is
- AIs always zero
- Bthe net charge flowing through the area
- Cmeasure of the flow of electric charge in amperes per unit area of cross-section
- Dthe net charge flowing through the area per unit time
✓
Answer
(c) : measure of the flow of electric charge in amperes per unit area of cross-section
Explanation: Current density $J =\frac{I}{A}$
In electromagnetism, current density is the electric current per unit area of cross section. Or It is the measure of the flow of electric charge in amperes per unit area of cross-section .It is a vector and has a direction along the area vector.
Explanation: Current density $J =\frac{I}{A}$
In electromagnetism, current density is the electric current per unit area of cross section. Or It is the measure of the flow of electric charge in amperes per unit area of cross-section .It is a vector and has a direction along the area vector.
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