A battery with negligible internal resistance is connected with 10m long wire. A standard cell gets balanced on 600 cm length of this wire. On increasing the length of potentiometer wire by 2m then the null point will be displaced by
Text Solution
Verified by ExpertsThe correct answer is:
B
By using 
⇒ ⇒ 
⇒ ⇒ 
.
Hence displacement = 720 – 600 = 120 cm
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