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In the circuit shown in figure ammeter a...

In the circuit shown in figure ammeter and voltmeter are ideal. If `E=4 V,R=9Omega` and `r=1Omega` then readings of ammeter and voltmeter are

A

`1A, 3V`

B

`2A,3V`

C

`3A,4V`

D

`4A,4V`

Text Solution

Verified by Experts

The correct Answer is:
A
All these resistors are in paralllel.
`:. R_("net")=R/3+r=4Omega`
Hence, the main current
`i=E/R_("net")=1A`
Current through either of the resistance
`is i/3=or 1/3A`
`:. V=iR=(1/3)(9)=3V`
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