Questions
For measurement of potential difference, potentiometer is preferred in comparison to voltmeter because
a
potentiometer is more sensitive than voltmeter
b
the resistance of potentiometer is less than voltmeter
c
potentiometer is cheaper than voltmeter
d
potentiometer does not take current from the circuit
detailed solution
Correct option is D
Potentiometer works on null deflection method. In balance condition, no current flows in secondary circuit.Talk to our academic expert!
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A potentiometer is an ideal device of measuring potential difference because
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