Electric Potential (Calculation for a point charge, Electric Dipole and System of Charges... ) NEET Questions

Physics - Electrostatics

Electric Potential (Calculation for a point charge, Electric Dipole and System of Charges... ) MCQ Questions


7.
The potential energy of a system of two point charges q₁ and q₂ separated by a distance r is:
A.
q₁q₂ / (8πε₀r³)
B.
q₁q₂ / (ε₀r²)
C.
q₁q₂ / (4πε₀r²)
D.
q₁q₂ / (4πε₀r)
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ANSWER :
D. q₁q₂ / (4πε₀r)
8.
The potential difference between two points in an electric field is defined as:
A.
The charge per unit area
B.
The force on a unit positive charge
C.
The electric field strength
D.
The work done in moving a unit positive charge between the points
😑 View Answer Rough Work Error
ANSWER :
D. The work done in moving a unit positive charge between the points
9.
The electric potential at a point due to a point charge is:

NEET - 2015

A.
Directly proportional to distance
B.
Inversely proportional to distance
C.
Inversely proportional to the square of the distance
D.
Independent of the charge
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ANSWER :
B. Inversely proportional to distance
10.
The electric potential at the midpoint between two equal but opposite charges is:
A.
Depends on the distance between charges
B.
Maximum
C.
Equal to the charge magnitude
D.
Zero
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ANSWER :
D. Zero
11.
If the electric field is zero in a region, the electric potential in that region:
A.
Is infinite
B.
Must be zero
C.
Must vary linearly with distance
D.
May be constant
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ANSWER :
D. May be constant
12.
The potential energy of an electric dipole in a uniform electric field is minimum when:
A.
The dipole makes 45° with the field
B.
The dipole is perpendicular to the field
C.
The dipole is anti-parallel to the field
D.
The dipole is aligned with the field
😑 View Answer Rough Work Error
ANSWER :
D. The dipole is aligned with the field