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When the frequency of the voltage applied to a series RC circuit is increased, the phase angle ______.

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When the frequency of the voltage applied to a series RC circuit is increased, the phase angle ______. Answer: Decreases

In a series RC circuit, capacitive reactance is given by Xc = 1/(2πfC). As frequency increases, capacitive reactance decreases. Consequently, the phase difference between the applied voltage and circuit current decreases, so the phase angle becomes smaller and approaches 0° at very high frequencies.

Question context

This question is part of ⚡ Electrical Engineering within the broader 🛠️ Engineering Essentials subject and appears in the PTS Pakistan Testing Service preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.