A metal rod of length 10 cm and a rectangular cross-section of \(1~ \text {cm} \times 1/2~ \text {cm}\) is connected to a battery across opposite faces. The resistance will be:
| 1. | maximum when the battery is connected across\(1~ \text {cm} \times 1/2~ \text {cm}\) faces. |
| 2. | maximum when the battery is connected across \(10~ \text {cm} \times 1~ \text {cm}\) faces. |
| 3. | maximum when the battery is connected across \(10~ \text {cm} \times 1/2~ \text {cm}\) faces. |
| 4. | same irrespective of the three faces. |
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