A metal rod of length 10 cm and a rectangular cross – section of 1 cm × 1/2 cm is connected to a battery across opposite faces. The resistance will be

Correct Answer is : Maximum when the battery is connected across 1 cm × 12 cm faces.

Same irrespective of the three faces.

Maximum when the battery is connected across 1 cm × 1/2 cm faces.

Maximum when the battery is connected across 10 cm × 1/2 cm faces.

Maximum when the battery is connected across 10 cm × 1 cm faces.

KCET 2020 Physics Solved Paper

Question : 49 of 60

Marks: +1, -0

A metal rod of length 10 cm and a rectangular cross – section of 1 cm ×

cm is connected to a battery across opposite faces. The resistance will be

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