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Capacitors MCQs

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Practice free Capacitors multiple-choice questions with instant answer feedback and step-by-step solutions. Click an option to check yourself, reveal the full explanation, and work through all 102 questions — no login required.

Question 19hard

The dielectric constant is the ability of a material to establish an electric field.

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Question 20hard

A 0.01 μF capacitor equals how many picofarads?

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Question 21hard

Energy is stored by a capacitor in a magnetic field.

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Question 22hard

XC is inversely proportional to frequency and capacitance.

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Question 23hard

Capacitance is directly proportional to plate area and plate separation.

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Question 24hard

An uncharged capacitor and a 1 kΩ resistor are connected in series with a switch and a 6 V battery. At the instant the switch is closed, the voltage across the capacitor is

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Question 25hard

Total parallel capacitance is less than that of the smallest capacitor in parallel.

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Question 26hard

A 220 Ω resistor is in series with a 2.2 μF capacitor. The time constant is

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Question 27hard

A 4.7 MΩ resistor is in series with a 0.015 μF capacitor. The combination is across a 12 V source. How long does it take the capacitor to fully charge?

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