Physics · Current Electricity
In a potentiometer, the cross-sectional area of the wire is 4 cm2, the current flowing in the circuit is 1 A, and the potential gradient is 7.5 V/m. The resistivity of the potentiometer wire is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15 × 10 -4 Ωm
- 24 × 10 -2 Ωm
- 32 × 10 -6 Ωm
- 43 × 10 -3 Ωm✓
Correct answer
3 × 10 -3 Ωm
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