ELECTROMAGNETIC FIELD THEORY QUIZ

A 10 µF, 20 µF, 22 µF, and 100 µF capacitor are in parallel. The total capacitance is

4.86 µF

100 µF

2.43 µF

152 µF

TRUE ANSWER : ?
YOUR ANSWER : ?

When the plate area of a capacitor increases,

The voltage it can withstand increases

The capacitance increases

The capacitance decreases

The capacitance is unaffected

TRUE ANSWER : ?
YOUR ANSWER : ?

The presence of an uncharged conductor near a charged one increases the

Potential of the charged conductor

All of the listed here

Charge of the charged conductor

Capacity of the charged conductor

TRUE ANSWER : ?
YOUR ANSWER : ?

Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the

Voltage across the plates decreases

Charge on the capacitor decreases

Voltage across the plates increases

Charge on the capacitor increases

TRUE ANSWER : ?
YOUR ANSWER : ?

An electrolytic capacitor is generally made to provide

Large value of capacitance

Fixed capacitance

Variable capacitance

Low capacitance

TRUE ANSWER : ?
YOUR ANSWER : ?

A dielectric material must be

Insulator

Semi conductor

Resistor

Good conductor

TRUE ANSWER : ?
YOUR ANSWER : ?

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

70.5 ms

352 ms

3.5 ms

TRUE ANSWER : ?
YOUR ANSWER : ?

The breakdown voltage for paper capacitors is usually

200 to 1600 volts

2000 to 3000 volts

20 to 60 volts

more than 10000 volts

TRUE ANSWER : ?
YOUR ANSWER : ?

A condenser suitable for D.C. only is

Oil impregnated paper condenser

Metallic paper capacitor

Metallic plate variable gang condenser

Poled aluminium electrolytic condenser

TRUE ANSWER : ?
YOUR ANSWER : ?

When a dielectric is placed in an electric field the field strength

None of the listed here

Increase

Decrease

Remains same

TRUE ANSWER : ?
YOUR ANSWER : ?

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