Electric Field and Potential NDA Questions

NDA Physics

Electric Field and Potential MCQ Questions


7.
What is the direction of the electric field at a point in space due to a positive charge?
A.
Toward the charge
B.
Away from the charge
C.
Parallel to the charge
D.
Perpendicular to the charge
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ANSWER :
B. Away from the charge
8.
What is the electric field at a point midway between two equal but opposite charges?
A.
Zero
B.
Maximum
C.
Infinite
D.
Equal to the charge
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ANSWER :
A. Zero
9.
Which quantity is a measure of the potential energy per unit charge?
A.
Electric field
B.
Electric flux
C.
Electric potential
D.
Electric current
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ANSWER :
C. Electric potential
10.
Which of the following describes the potential difference between two points in an electric field?
A.
The amount of work done to move a charge from one point to the other
B.
The number of electrons between the points
C.
The distance between the points
D.
The speed of charge between the points
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ANSWER :
A. The amount of work done to move a charge from one point to the other
11.
How is the potential difference between two points related to the electric field along the path?
A.
It is the integral of the electric field along the path
B.
It is the derivative of the electric field along the path
C.
It is the square of the electric field along the path
D.
It is the inverse of the electric field along the path
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ANSWER :
A. It is the integral of the electric field along the path
12.
What is an equipotential surface?
A.
surface where the electric potential is constant
B.
A surface where the electric field is zero
C.
A surface where the electric charge is constant
D.
A surface where the electric current is constant
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ANSWER :
A. surface where the electric potential is constant