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In the adjacent shown circuit, a voltmet...

In the adjacent shown circuit, a voltmeter of internal resistance R, when connected across B and C reads `100/3 V`.
neglecting the internal resistance of the battery, the value of R is:

A

`100 kOmega`

B

`75 kOmega`

C

`50 kOmega`

D

`25 kOmega`

Text Solution

Verified by Experts

The correct Answer is:
C
`V_(BC) =[((50 xx R)/(50 + R))/(50 + (50 xx R)/(50 + R))] xx 100`

`rArr 100/3 = ((50 R)/(2500 + 50 R + 50 R)) xx 100`
`rArr 50R = 2500 rArr R = 50 kOmega`
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