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Kirchhoff's Voltage Law

The potential...

Question

The potential difference $(V_{P} - V_{Q})$ between points $P$ and $Q$ in the given figure is:

A

7 V

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B

21 V

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C

14 V

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D

28 V

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Solution

The correct option is C $14 V$
$V_{A Q} = 3 V$ (due to battery)
$V_{B Q} = 5 + V_{A Q} = 8 V$
$V_{P Q} = 2 \times 3 + V_{B Q} = 6 + 8 = 14 V$ .

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