Selenium is a
Selenium is a
Conductor | |
Photo Conductor | |
First Insulator then Conductor | |
Insulator |
Physics MCQS
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One of the application of electrostatic Induction is
One of the application of electrostatic Induction is
Photo Copier | |
Wilson Cloud Chamber | |
X-Rays | |
Laser |
Identify the practical application of electrostatic Induction is
Identify the practical application of electrostatic Induction is
X-Rays | |
Laser | |
Inkjet Printer | |
A.C Generator |
Photo copier and inkjet printer are the applications of
Photo copier and inkjet printer are the applications of
Electrostatic | |
Magnetism | |
Electricity | |
Electro Magnetism |
One Joule is equal to.
One Joule is equal to:
1.6 x 10-19 ev | |
1.6 x 10-18 ev | |
1.6 x 1019 ev | |
1.6 x 10-18 ev |
Electric field intensity at a point is defined by the relation.
Electric field intensity at a point is defined by the relation:
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The concept of an electric field lines is introduced by.
The concept of an electric field lines is introduced by:
Faraday | |
Einstein | |
Joseph Henry | |
Coulomb |
The electrostatic force between two charges is 42 N. If we place a dielectric of Er = 2.1 between the charges then the force become equal to.
The electrostatic force between two charges is 42 N. If we place a dielectric of Er = 2.1 between the charges then the force become equal to:
88.2 N | |
20 N | |
42 N | |
2 N |
The electrostatic force of repulsion between two electrons at a distance 1 m is
The electrostatic force of repulsion between two electrons at a distance 1 m is
2.3 x 10-24 N | |
2.3 x 10-28 N | |
2.3 x 10-30 N | |
2.3 x 10-26 N |
Numerical value of permittivity of free space is
Numerical value of permittivity of free space is
9 x 109 Nm-2c2 | |
8.85 x 10-12 Nm-2c2 | |
8.85 x 10-12 N-1m-2c2 | |
9 x 109 N-1m-2c2 |
SI unit of permittivity of free space are
SI unit of permittivity of free space are
N-1m2c-1 | |
C2N-1m-1 | |
Nm2c-2 | |
C2N-1m-2 |
The SI Unit of relative permittivity is
The SI Unit of relative permittivity is
Nm2c-2 | |
Fm-1 | |
No Unit | |
C2N-1m-2 |
Relative permittivity for air is
Relative permittivity for air is
1.0006 | |
1.006 | |
1.6 | |
1.06 |
The electrons in one coulomb charge is equal to.
The electrons in one coulomb charge is equal to:
6.25 x 1019 | |
6.25 x 10-19 | |
6.25 x 1018 | |
1.6 x 10-19 |
The number of electrons in one coulomb charge is equal to.
The number of electrons in one coulomb charge is equal to:
6.25 x 10-19 | |
6.25 x 1018 | |
6.25 x 1019 | |
1.6 x 10-19 |
Presence of dielectric always.
Presence of dielectric always:
Increase the electrostatic force. | |
Decrease the electrostatic force. | |
Does not effect. | |
Double the electrostatic force. |
When a dielectric is placed between two charges, then Coulomb's force will be.
When a dielectric is placed between two charges, then Coulomb's force will be:
Zero | |
Negative | |
Increased | |
Decreased |
For which material medium, force between two charges particles is maximum?
For which material medium, force between two charges particles is maximum?
Mica | |
Teflon | |
Germanium | |
Ammonia |
If the medium between the charges is not free space then electrostatic force will.
If the medium between the charges is not free space then electrostatic force will:
Increase | |
Remain same | |
Decrease | |
None of these |
A diffraction grating has 5000 lines per cm. Its grating element is.
A diffraction grating has 5000 lines per cm. Its grating element is:
2x10-3cm | |
200x10-3cm | |
0.2x 10-3cm | |
20x10-3cm |