In the circuit shown below, The reading of the voltmeter $V$ is ...........
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(a) In the following circuit potential difference between
$C$ and $A$ is ${V_C} - {V_A} = 1 \times 4 = 4$ ……$(i)$
$C$ and $B$ is ${V_C} - {V_B} = 1 \times 16 = 16$ ……$(ii)$
On solving equations $(i)$ and $(ii)$ we get
${V_A} - {V_B} = 12\,V$.
$C$ and $A$ is ${V_C} - {V_A} = 1 \times 4 = 4$ ……$(i)$
$C$ and $B$ is ${V_C} - {V_B} = 1 \times 16 = 16$ ……$(ii)$
On solving equations $(i)$ and $(ii)$ we get
${V_A} - {V_B} = 12\,V$.
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