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Question

If 3 A of current is flowing between points P and Q in the circuit, then the potential difference between P and Q is.

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A
30 V
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B
22 V
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C
20 V
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D
15 V
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Solution

The correct option is C 20 V
By using the formula ,
VQVP=ΣεΣiR
or VQVP=2(3×2+3×4)
or VQVP=218=20V
or VPVQ=20V


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