In the circuit shown , the value of R in...

In the circuit shown , the value of R in ohm that will result in no current through the 30 V battery is

A

`10Omega`

B

`25Omega`

C

`30Omega`

D

`40Omega`

Verified by Experts

The correct Answer is:

C

c. `i = 50/(20 + R)`
Potential drop across R = potential drop across AB
`50 /(20+R) R = 30 or R = 30 Omega`

.

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