In the given arrangement, the reading of...

In the given arrangement, the reading of ammeter is same in each case when either `k_(1)` or `k_(2)` is closed. The reading of the ammeter is

A

`(E_1+E_2)/R`

B

`(E_1-E_2)/R`

C

data insufficient

D

none of these

Verified by Experts

The correct Answer is:

B

b. `I = (E-E_(1))/(R') = (E-E_2)/(R+R')`
`(E-E_2)/(E-E_2) = (R')/(R+R')`
`(E_E_2)/(E_E_2) = R/R'`
or `I = (E_1-E_2)/R`.

.

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