The potentiometer wire AB shown in figure is 50cm long. When AD = 30cm, no deflection occurs in the galvanometer. Find R

Q. The potentiometer wire AB shown in figure is 50cm long. When AD = 30cm, no deflection occurs in the galvanometer. Find R
Current Electricity
(a) 3Ω
(b) 3.5Ω
(c) 4Ω
(d)2.5Ω
Ans: C

30/20 = 6/R

=> R = 4 ohm

Author: Rajesh Jha

QuantumStudy.com

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