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In the circuit shown in figure when swit...

In the circuit shown in figure when switch `S_(1)` is closed and `S_(2)` is open, the ideal voltmeter shows a reading of 18 V. When switch `S_(2)` is closed and `S_(1)` is open, the reading of the voltmeter is 24 V. When `S_(1)` and `S_(2)` both are closed the voltmeter reading will be

A

14.4V

B

20.6V

C

24.2V

D

10.8V

Text Solution

Verified by Experts

`18=(6E)/(6+r) and 24=(12E)/(12+r) implies r=6Omega, E=36V`
`6||12=4Omega implies` Reading `=(36 times4)/(4+6)=14.4V`
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Knowledge Check

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