Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Physics Current, Resistance and Electricity Resistance and Resistivity
A metal rod of length 10 cm and a rectangular cross-section of \(\rm 1\ cm \times \frac{1}{2}\ cm\) is connected to a battery across opposite faces. The resistance will be _________.
1
Maximum when the battery is connected across 10 cm × 1 cm
2
Maximum when battery is connected across \(\rm 1\ cm \times \frac{1}{2}\ cm\) faces
3
Maximum when the battery is connected across \(\rm 10 \ cm \times \frac{1}{2}\ cm\)
4
Same irrespective of three faces