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In the given potentiometer circuit lengt...

In the given potentiometer circuit length of the wire `AB` is `3 m` and resistance is `R = 4.5 Omega`. The length `AC` for no deflection in galvanometer is

A

2 m

B

1.8 m

C

dependent on `r_1`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
D
d. `E_1` could be balanced if positive terminal of `E_1` would be connected to A.
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