A) \[\frac{2\rho dA}{IT}\]
B) \[\frac{2\rho dA}{I}\]
C) \[\frac{\rho dA}{I}\]
D) \[\frac{\rho dA}{IT}\]
Correct Answer: C
Solution :
| [c] \[\rho =\frac{q}{vol}\] |
| \[=\frac{q}{Ad}\] |
| \[q=\rho Ad\] |
| \[q=it\] |
| \[t=\frac{q}{I}\] |
| \[=\frac{\rho Ad}{I}\] |
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