Current Electricity Part 1

Section: Physics
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Question : 2 of 100
 
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In the circuit shown, a four–wire potentiometer is made of a 400 cm long wire, which extends between A and B. The resistance per unit length of the potentiometer wire is r= 0.01 Ω/cm If an ideal voltmeter is connected as shown with jockey J at 50 cm from end A, the expected reading of the voltmeter will be:
[8 Apr 2019 Shift 2]
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