Capacitors: A device that stores Electrical Energy in an Electric Field

This is an MCQ-based quiz on Capacitors.

This includes ‎Capacitor types, ‎Applications of capacitors, ‎Category: Capacitors, and Capacitance.

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A 2 μF, a 4 μF, and a 10 μF capacitor are connected in series. The total capacitance is less than

2 μF 4 μF 10 μF 1.5 μF

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

6 V 3 V 2 V 0 V

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

48 μs 480 μs 2.42 μs 24 μs

A capacitor of 0.02 μF is larger than

0.000020 F 200,000 pF 2,000 pF All of the above

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?

35 ms 352 ms 3.5 s 70.5 ms

Four 0.15 μF capacitors are in parallel. The total capacitance is

0.15 μF 0.30 μF 0.6 μF 0.8 μF

Which of the following capacitors is polarized?

Mica Ceramic Plastic-film Electrolytic

A 0.01 μF capacitor equals how many picofarads?

100 pF 1,000 pF 10,000 pF 100,000 pF

A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased

VR > VC VC > VR VR = VC VR and VC = 0

................ capacitors will have the least value of breakdown voltage

Paper Mica Ceramic Electrolytic

Which of the following capacitor is preferred for the high-frequency circuit?

Air capacitor Mica capacitor Electrolytic capacitor None of the above

What does a capacitor consist of?

Two insulators only Two conductors only Two insulators separated by a conductor Two conductors separated by an insulator

The Internal heating of a capacitor is usually attributed to .............

Plate vibration Dielectric charge Leakage resistance Electron movement

What kind of bridge is used for the measurement of the value of the capacitance?

Hay's bridge Wien's bridge Schering bridge Wheatstone bridge

A 0.00022 F capacitor equals how many microfarads?