PHY 102 Pre Test

Created by Oladeji Timilehin Daramola

PHY 102

NOTE: The quiz is meant for revision purpose only!

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1 / 20

The ability of charged bodies to exert force on one another is attributed to the existence of

2 / 20

The lines of force due to charged particles are

3 / 20

A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is

4 / 20

A potential of 400V is applied to a capacitor, the plates of which are 4mm apart. The strength of electric field is

5 / 20

If an ohm meter reading immediately goes practically to zero and stays there, capacitor is

6 / 20

A capacitance is a circuit component that opposes the change in circuit ?

7 / 20

"The total electric flux through any closed surface surrounding charges is equal to the amount of charge enclosed".

The above statement is associated with:

8 / 20

Permittivity is expressed in

9 / 20

The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be

10 / 20

An uncharged conductor is placed near a charged conductor, then

11 / 20

The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its value.

12 / 20

Which of the following statements is incorrect ?

The leakage resistance of ceramic capacitors is generally hig


(b) The stored energy in a capacitor decreases with reduction in value of capacitance

(c) The stored energy in a capacitor increases with applied voltag

(d) A wire cable has distributed capacitance between the conductor

13 / 20

Which of the following statements is correct?

14 / 20

The dissipation factor a good dielectric is of the order of

15 / 20

The ohm meter reading for a short circuited capacitor is

16 / 20

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

17 / 20

Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is

18 / 20

The time constant and R-C circuit may also be defined as the time during which the charging current falls to ______ percent of its initial maximum value,

19 / 20

Paper condenser is

20 / 20

Inorder to remove static electricity from machinery

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