A) Potentiometer is used to measure the current in a circuit.
B) Potentiometer is used to measure the internal resistance of a cell.
C) Potentiometer is used to measure the resistance of a circuit.
D) Potentiometer is used to measure the potential difference across a resistor.
Correct Answer: B
Solution :
Option [b] is correct. Explanation: Potentiometer is used to measure internal resistance of a cell, e.m.f. of a cell and to compare the e.m.f.'s of
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