Physics · Current Electricity
The area of cross-section of a potentiometer wire is 6 × 10-7 m2. The potential difference per unit length of the potentiometer wire is 0.15 V m-1. If the current through the potentiometer wire is 0.3 A, then the resistivity of the material of the potentiometer wire is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 13 × 10-7 Ω m
- 23 × 10-6 Ω m
- 34 × 10-7 Ω m
- 44 × 10-6 Ω m
Correct answer
Option 3
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