Coulomb’s Law (Forces Between Two Point Charges, Forces Between Multiple Charges... ) NEET Questions

Physics - Electrostatics

Coulomb’s Law (Forces Between Two Point Charges, Forces Between Multiple Charges... ) MCQ Questions


1.
Coulomb's law is applicable for:
A.
Only point charges
B.
Only spherical charges
C.
Both point and spherical charges
D.
Only charges in motion
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ANSWER :
C. Both point and spherical charges
2.
The force between two charges is 16 N. If the distance between them is doubled, the force will be:
A.
32 N
B.
8 N
C.
16 N
D.
4 N
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ANSWER :
D. 4 N
3.
The unit of the electric force constant (k) in Coulomb's law is:
A.
Nm/C
B.
N/C²
C.
C²/Nm²
D.
Nm²/C²
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ANSWER :
D. Nm²/C²
4.
According to the superposition principle, the net force on a charge due to multiple charges is:
A.
The arithmetic sum of individual forces
B.
The vector sum of individual forces
C.
Zero
D.
Double the largest force
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ANSWER :
B. The vector sum of individual forces
5.
If the distance between two charges is reduced to one-third, the force between them:

NEET - 2017

A.
Increases 3 times
B.
Increases 9 times
C.
Decreases 3 times
D.
Decreases 9 times
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ANSWER :
B. Increases 9 times
6.
The force between two charges is 10 N. If the magnitude of one charge is halved, the force will be:
A.
10 N
B.
5 N
C.
20 N
D.
2.5 N
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ANSWER :
B. 5 N