A) maximum when the battery is connected across 1 cm \[\times \frac{1}{2}\] cm faces.
B) maximum when the battery is connected across 10 cm \[\times \]1 cm faces.
C) maximum when the battery is connected across 10 cm \[\times \frac{1}{2}\] cm faces.
D) same irrespective of the three faces.
Correct Answer: A
Solution :
| Option [a] is correct. |
| Explanation: As we know that, \[\operatorname{R}=\rho \left( \frac{l}{A} \right)\] |
| The maximum resistance will be achieve when the value of \[\frac{l}{A}\], is maximum, so that 'A' must be minimum and it is minimum when area of cross section is 1 cm \[\times \frac{1}{2}\]cm, |
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