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Eight cells marked 1 to 8, each of emf 5...

Eight cells marked 1 to 8, each of emf `5 V` and internal resistance `0.2 Omega` are connected as shown. What is the reading of ideal voltmeter ?

A

40V

B

20V

C

5V

D

Zero

Text Solution

Verified by Experts

The emf of cells connected in reverse polarity cancel each other. Hence, cells marked 2, 3 and 4 together cancel the effect of cells marked 5, 6 and 7, the circuit reduces to that shown in the figure.
Hence, voltmeter reading = 5
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