Question # 1

the force between two charge is 28 N. If paraffin wax of relative permittivity 2.8 is introduced between the charges as medium, then the force reduces to.

Choose an answer

25 N

20 N

10 N

15 N

The electric flux through closed surface depends upon

Choose an answer

Charge

Medium

Geometry

Charge and Medium

The electric field lines are closer where the field is

Choose an answer

Strong

Weak

Uniform

Variable

An ECG records the _____ between points on human skin generated by electric process i the heart.

Choose an answer

Heart beat

Pulse rate

Pressure

Voltage

Dielectric constant _εr for air is:

Choose an answer

1

1.006

1.0002

1.0006

In photocopier, then drum is coated with layer of.

Choose an answer

Aluminium

Copper

Selenium

silver

Selenium is

Choose an answer

Insulator is dark

Insulator in light

Conductor in dark

Semi conductor in dark

Electric potencial of earth is taken to be zero because the earth is good:

Choose an answer

Semiconductor

Conductor

Insulator

Dielectric

Presence of dielectric between two charges always.

Choose an answer

Reduces the electric force

Enhance the electric force

Does not effect electric force

Double the electric force

An electric field cannot deflect

Choose an answer

X-rays

a-particles

ß-particles

None of these

Due to polarization, electric field E.

Choose an answer

Increase

Decrease

First increases then decreases

Remain same

The relative permitivity of air is

Choose an answer

79.5

1.006

1.06

1.0006

The number of electrons in one coulomb charge is equal to

Choose an answer

6.2 x 10¹⁸ electrons

Zero electrons

1.6 x 10^-22 electrons

6.2 x 10²¹ electrons

A changing electric flux creates.

Choose an answer

Electric fields

Gravitational

Magnetic field

Electric charge

The "toner" of photocopier is given:

Choose an answer

Positive charge

Negative charge

Remains neutral

All of above

One electron volt is equal to.

Choose an answer

1.6 x 10^-19 Joule

1.6 x 10^-19Coulomb

1.6 x 10^-12N

1.6 x 10¹⁸Joule

Concept of the electric field lines is introduced by

Choose an answer

Coulomb

Faraday

Einstein

Joseph henry

A one microfarad capacitor of a TV is subjected to 4000 V potencial difference.The energy stored in capacitor is:

Choose an answer

8 j

16 j

4 x 10^-3j

2 x 10^-3j

More Classes

Other Links

Physics ICS Part 2 Chapter 12 Online MCQ's Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer