Electric Field (Electric field due to a Point Charge, Electric Field Lines... ) NEET Questions

Physics - Electrostatics

Electric Field (Electric field due to a Point Charge, Electric Field Lines... ) MCQ Questions


13.
The electric field due to a dipole at a point on its axial line is proportional to:
A.
1/r^2
B.
1/r^3
C.
1/r
D.
r^2
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ANSWER :
B. 1/r^3
14.
Which of the following statements about electric field lines is true?
A.
They form closed loops
B.
They originate from positive charges and terminate at negative charges
C.
They are parallel to the surface of a conductor
D.
They can intersect each other
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ANSWER :
B. They originate from positive charges and terminate at negative charges
15.
What is the electric field at the midpoint of two equal but opposite charges?
A.
Directed from negative to positive charge
B.
Directed from positive to negative charge
C.
Zero
D.
Infinity
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ANSWER :
B. Directed from positive to negative charge
16.
The electric field at a distance r from a point charge Q is E. What will be the electric field at a distance 2r?
A.
E/2
B.
E/4
C.
2E
D.
4E
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ANSWER :
B. E/4
17.
An electric dipole is placed in a non-uniform electric field. It experiences:

NEET - 2023

A.
A force only
B.
A torque only
C.
Both a force and a torque
D.
Neither a force nor a torque
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ANSWER :
C. Both a force and a torque
18.
The torque experienced by an electric dipole in a uniform electric field is maximum when the angle between the dipole moment and the electric field is:

NEET - 2019

A.
0°
B.
45°
C.
90°
D.
180°
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ANSWER :
C. 90°