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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACSeries AC CircuitsEasy2 minPYQ_2020

PhysicsEasysingle choice

An ac source of $50 V$ (r.m.s value) is connected across a series $R - C$ circuit. If the r.m.s voltage across the resistor is $40 V$ , then the r.m.s voltage across the capacitor is

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Answer:

Solution:

For an R - C circuit

Applied voltage, $V = \sqrt{{V_{R}^{2} + V}_{C}^{2}}$

$∴ 50 = \sqrt{{(40)}^{2} + V_{C}^{2}}$

$\Rightarrow V_{C} = 30 V$

Subject:PhysicsTopic:EMI/ACSubtopic:Series AC Circuits

⏱ 2mℹ️ Source: PYQ_2020

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