Electrostatics Archives - Page 3 of 11 - MCQ and Quiz for Exams

21. What is the value of capacitance that must be connected in parallel with 50 pF condenser to make an equivalent capacitance of 150 pF ?

50 pF

100 pF

150 pF

200 pF

Detailed SolutionWhat is the value of capacitance that must be connected in parallel with 50 pF condenser to make an equivalent capacitance of 150 pF ?

22. The dielectric constant (relative permittivity) of glass is given by

0.1 to 0.4

0.5 to 1.0

2.0 to 4.0

5 to 100

Detailed SolutionThe dielectric constant (relative permittivity) of glass is given by

23. The electric field at a point situated at a distance d from straight charged conductor is

proportional to d

inversely proportional to d

inversely proportional to d

none of the above

Detailed SolutionThe electric field at a point situated at a distance d from straight charged conductor is

24. Which of the following capacitors will have the least variation?

Paper capacitor

Ceramic capacitor

Silver plated mica capacitor

None of the above

Detailed SolutionWhich of the following capacitors will have the least variation?

25. In a capacitive circuit

a steady value of applied voltage causes discharge

an increase in applied voltage makes a capacitor charge

decrease in applied voltage makes a capacitor charge

none of the above

Detailed SolutionIn a capacitive circuit

26. In the case of a lossy capacitor, its series equivalent resistance value will be

small

very small

large

zero

Detailed SolutionIn the case of a lossy capacitor, its series equivalent resistance value will be

27. A capacitor consists of

two insulators separated by a conductor

two conductors separated by an insulator

two insulators only

two conductors only

Detailed SolutionA capacitor consists of

28. Dielectric strength of medium

increases with rise in temperature

increases with moisture content

is same for all insulating materials

none of the above

Detailed SolutionDielectric strength of medium

29. Electric intensity at any point in an electric field is equal to the at that point.

electric flux

magnetic flux density

potential gradient

none of the above

Detailed SolutionElectric intensity at any point in an electric field is equal to the at that point.

30. is that property of a capacitor which delays any change of voltage across it.

Inductance

Capacitance

Potential gradient

None of the above

Detailed Solutionis that property of a capacitor which delays any change of voltage across it.

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