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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACSeries AC CircuitsMedium3 minQB

PhysicsMediuminteger

The rms readings of voltmeters $V_{1}, V_{2}, V_{3}$ are 150V, 130V and 120V respectively. If the applied ac rms voltage is $N 10 V$ , find value of N .

Answer:

Solution:

$V_{3} = V_{R} = 120 V$ ; $V_{2} = V_{R}^{2} + V_{C}^{2} = 130 \Rightarrow V_{C} = 50 V$ .

$V_{1} = V_{R}^{2} + V_{L}^{2} = 150 \Rightarrow V_{L} = 90 V$ .

$V = V_{R}^{2} + (V_{L} - V_{C})^{2} = 12 0^{2} + 4 0^{2} = 4010 V$ , so $N = 40$ .

Stream:JEESubject:PhysicsTopic:EMI/ACSubtopic:Series AC Circuits

⏱ 3mℹ️ Source: QB

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