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


7.
The direction of the electric field at a point is:
A.
None of the above
B.
Opposite to the force on a positive test charge
C.
In the direction of the force on a negative test charge
D.
The direction of the force on a positive test charge
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ANSWER :
D. The direction of the force on a positive test charge
8.
If the electric field at a point is zero, then:
A.
The electric flux through a surface containing that point is zero
B.
The potential at that point is zero
C.
The charge at that point is zero
D.
The net force on a charge placed at that point is zero
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ANSWER :
D. The net force on a charge placed at that point is zero
9.
The electric field at the center of a uniformly charged ring is:

NEET - 2021

A.
Zero
B.
Maximum
C.
Depends on the radius of the ring
D.
Depends on the charge density
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ANSWER :
A. Zero
10.
Torque on an electric dipole in a uniform electric field is given by:
A.
pE cos θ
B.
pE sin θ
C.
pE tan θ
D.
p/E
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ANSWER :
B. pE sin θ
11.
The electric field due to a point charge is:

NEET - 2015

A.
Constant throughout
B.
Directly proportional to distance from the charge
C.
Inversely proportional to the square of the distance from the charge
D.
Zero
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ANSWER :
C. Inversely proportional to the square of the distance from the charge
12.
Which of the following statements about electric field lines is incorrect?

NEET - 2016

A.
They originate from positive charges and terminate at negative charges
B.
They never intersect
C.
They form closed loops
D.
They indicate the direction of the electric field
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ANSWER :
C. They form closed loops