Electric Flux NEET Questions

Physics - Electrostatics

Electric Flux MCQ Questions


13.
For a surface placed in a non-uniform electric field, electric flux is calculated by:
A.
Adding E and A
B.
Multiplying E and A directly
C.
Dividing A by E
D.
Integrating E · dA over the surface
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ANSWER :
D. Integrating E · dA over the surface
14.
What happens to the electric flux if the angle between the electric field and the area vector is 90°?
A.
It remains unchanged
B.
It doubles
C.
It becomes infinite
D.
It becomes zero
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ANSWER :
D. It becomes zero
15.
If the electric field is in the plane of the surface, the electric flux through the surface is:
A.
A / E
B.
E × A
C.
E / A
D.
Zero
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ANSWER :
D. Zero
16.
The flux through a surface due to a charge outside the surface is:

NEET - 2020

A.
Zero
B.
Maximum
C.
Minimum
D.
Equal to charge enclosed
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ANSWER :
A. Zero
17.
For a closed surface, the net electric flux depends on:
A.
The electric field outside the surface
B.
The net charge enclosed by the surface
C.
The shape of the surface
D.
The area of the surface
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ANSWER :
B. The net charge enclosed by the surface
18.
If a positive charge is placed inside a closed surface, the electric flux:
A.
Is negative
B.
Is positive
C.
Is zero
D.
Depends on the size of the surface
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ANSWER :
B. Is positive