Conductors and Insulators , Dielectrics and Electric Polarization NEET Questions

Physics - Electrostatics

Conductors and Insulators , Dielectrics and Electric Polarization MCQ Questions


7.
When a dielectric is placed in an electric field, it undergoes:
A.
Combustion
B.
Ionization
C.
Polarization
D.
Fission
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ANSWER :
C. Polarization
8.
Which of the following is not a characteristic of an insulator?
A.
High resistivity
B.
No free electrons
C.
Low conductivity
D.
High conductivity
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ANSWER :
D. High conductivity
9.
In a conductor, electric charges are:

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A.
Fixed in place
B.
Free to move
C.
Absent
D.
Always negative
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ANSWER :
B. Free to move
10.
A dielectric is a material that:

NEET - 2019

A.
Has free electrons
B.
Has high conductivity
C.
Does not allow electric field to exist
D.
Can be polarized in the presence of an electric field
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ANSWER :
D. Can be polarized in the presence of an electric field
11.
The electric polarization in a dielectric material leads to:
A.
Charge conduction
B.
Induced dipole moments
C.
Increased resistivity
D.
None of the above
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ANSWER :
B. Induced dipole moments
12.
The process by which a dielectric material increases the capacitance of a capacitor is called:
A.
Magnetization
B.
Polarization
C.
Ionization
D.
Saturation
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ANSWER :
B. Polarization