The resistivity of the potentiometer wire is 10 -7 m. Its area of cross-section is 10 -6…
Physics · Class 12 · CBSE — Current Electricity
The resistivity of the potentiometer wire is 10-7 \(\Omega\) m. Its area of cross-section is 10-6 m2. When a current I = 0.1. A flows through the wire, its potential gradient is:
- 10-2 Vm-1
- 10-4 Vm-1
- 0.1 Vm-1
- 10 Vm-1
Answer
(B) 10 -4 Vm -1
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