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In given figure an ammeter reads 5 A and...

In given figure an ammeter reads 5 A and voltmeter reads 40 V. The actual value of resistance R is

A

`8 Omega`

B

greater than `8 Omega`

C

less than `8 Omega`

D

`200 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B
Combind resistance of R and voltmeter.
`=(40)/(5)=8 Omega rArr (1)/(8)=(1)/( R) +(1)/(R_v)`
`rArr R gt 8 Omega`.
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