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MHT CET Physics question

PhysicsCurrent ElectricityMHT CET

A potentiometer consists of a wire of length 4 m and resistance . It is connected to a cell of e.m.f. 2 V. The potential difference per unit length of the wire will be

Answer: (A)

Solution

The cell is across the whole wire, so the p.d. per unit length is

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Question ID VK-045253