Conductors and Insulators , Dielectrics and Electric Polarization NEET Questions

Physics - Electrostatics

Conductors and Insulators , Dielectrics and Electric Polarization MCQ Questions


1.
Which of the following is a good conductor of electricity?
A.
Wood
B.
Rubber
C.
Glass
D.
Copper
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ANSWER :
D. Copper
2.
When an external electric field is applied to a dielectric, the induced charge appears:

NEET - 2023

A.
Only inside the material
B.
Only on the outer surface
C.
Only on the inner surface
D.
On both outer and inner surfaces
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ANSWER :
D. On both outer and inner surfaces
3.
The main difference between conductors and insulators is:
A.
Hardness of the material
B.
Color of the material
C.
Density of the material
D.
Free electrons in conductors
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ANSWER :
D. Free electrons in conductors
4.
Which of the following materials is a dielectric?
A.
Copper
B.
Iron
C.
Aluminum
D.
Mica
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ANSWER :
D. Mica
5.
When a dielectric material is placed between the plates of a capacitor, the capacitance:

NEET - 2018

A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
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ANSWER :
A. Increases
6.
In a conductor, electric field inside the material is:
A.
Variable
B.
Constant
C.
Zero
D.
Infinity
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ANSWER :
C. Zero