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In the circuit shown the resistance of v...

In the circuit shown the resistance of voltmeter is `10000 ohm` and that of ammeter is `20 ohm`. The ammeter reading is `0.10 amp` and voltmeter reading is 12 volts. Then `R` is equal to

A

`122Omega`

B

`100Omega`

C

`118Omega`

D

`116Omega`

Text Solution

Verified by Experts

The correct Answer is:
2
`V=I(R+R_(A))rArr12=0.1(R+20)`
`rArrR=(12)/( 0.1)-20 R=100Omega`
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