Question

In the circuit shown$,$ $A$ and $V$ are ideal ammeter and voltmeter respectively$.$ Reading of the voltmeter will be

• A. $2V$
• B. $1V$
• C. $0.5V$
• D. $zero$

Answer 1

Answer: (C)

$0.5V$

Voltmeter Read potential drop across it's end.

Potential Difference = $iR$

where $i$ is current and $R$ is resistance.

In this case ammeter is ideal, which means $R_a=0$

$V=i\times 0=0$

Since, No potential difference across voltmeter, it's reading would be Zero