Choose the correct option/options:
Three voltmeters, all having different resistances, are joined as shown in the figure. When some potential difference is applied across A and B, their readings are $V_{1}, V_{2}, V_{3}$ :

V_{1} = V_{2}

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V_{1} \neq V_{2}

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V_{1} + V_{2} = V_{3}

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V_{1} + V_{2} > V_{3}

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Solution

The correct options are
B $V_{1} \neq V_{2}$
C $V_{1} + V_{2} = V_{3}$
The potential difference across AB is given by
$[V_{A B} = V_{1} + V_{2} = V_{3}]$
Now, current through the upper branch is flowing through $[V_{1}]$ and $[V_{2}]$
But as their resistances are different their readings won't be equal.

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Q. Three voltmeters, all having different resistances, are joined as shown. When some potential difference is applied across A and B, their readings are

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