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If ammeter has zero resistance then –...

If ammeter has zero resistance then –

A

Reading of ammeter is `(epsilon)/(6R)`

B

Reading of ammeter is `(epsilon)/(7R)`

C

Reading of ammeter is `(epsilon)/(8R)`

D

Reading of ammeter is `(epsilon)/(9R)`

Text Solution

Verified by Experts

The correct Answer is:
B
Equivalent circuit.

`R_(eq)=(2R)/(3)+(R )/(2)=(7R)/(6)`
`i=(epsilon)/(R_(eq))`

Using Kirchoff.s first law current through
`AB=(3epsilon)/(7R) -(2epsilon)/(7R) =(epsilon)/(7R)`
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