The Force Between Two Parallel Currents Carrying Conductors-Definition of Ampere NEET Questions

Physics - Magnetic Effects of Current and Magnetism

The Force Between Two Parallel Currents Carrying Conductors-Definition of Ampere MCQ Questions


13.
If the distance between two parallel current-carrying conductors is doubled, the force per unit length:
A.
Remains the same
B.
Doubles
C.
Halves
D.
Becomes one-fourth
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ANSWER :
D. Becomes one-fourth
14.
If the current in one of the two parallel conductors is reversed, the force between them:
A.
Becomes zero
B.
Becomes attractive
C.
Becomes repulsive
D.
Becomes stronger
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ANSWER :
C. Becomes repulsive
15.
What happens to the force between two parallel conductors if the current in both is doubled?
A.
Becomes four times
B.
Doubles
C.
Remains the same
D.
Becomes half
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ANSWER :
A. Becomes four times
16.
Which law is used to determine the force between two parallel current-carrying conductors?
A.
Ampere’s force law
B.
Biot-Savart law
C.
Newton’s third law
D.
Ohm’s law
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ANSWER :
A. Ampere’s force law
17.
The force per unit length between two infinitely long current-carrying conductors is given by which law?
A.
Coulomb’s law
B.
Newton’s third law
C.
Faraday’s law
D.
Ampere’s force law
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ANSWER :
D. Ampere’s force law
18.
Two parallel current-carrying wires produce magnetic fields that:
A.
Cancel each other
B.
Reinforce each other
C.
Cancel in some regions
D.
Produce no effect
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ANSWER :
B. Reinforce each other