Ampere’s Law and its Applications to Infinitely Long Current Carrying Straight Wire and Solenoid NEET Questions

Physics - Magnetic Effects of Current and Magnetism

Ampere’s Law and its Applications to Infinitely Long Current Carrying Straight Wire and Solenoid MCQ Questions


13.
The direction of the magnetic field around a current-carrying conductor is given by ______.
A.
Right-hand thumb rule
B.
Fleming’s left-hand rule
C.
Coulomb’s law
D.
Biot-Savart law
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ANSWER :
A. Right-hand thumb rule
14.
The magnetic field outside an infinitely long solenoid is ______.
A.
Zero
B.
Infinite
C.
Equal to the inside field
D.
Depends on the medium
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ANSWER :
A. Zero
15.
Which of the following conditions is necessary for Ampere’s law to hold?
A.
Magnetic field varies with distance
B.
The current is time-dependent
C.
There are no free charges
D.
No displacement current is present
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ANSWER :
D. No displacement current is present
16.
Which of the following configurations satisfies Ampere’s circuital law?
A.
Charged particle in motion
B.
Infinitely long straight wire
C.
A circular loop carrying current
D.
A solenoid
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ANSWER :
D. A solenoid
17.
Ampere’s law is valid for which type of magnetic field?

NEET - 2021

A.
Only uniform fields
B.
Only static fields
C.
Any closed loop with steady current
D.
Only for changing fields
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ANSWER :
C. Any closed loop with steady current
18.
According to Ampere’s law, the magnetic field at a point outside an infinitely long current-carrying straight wire varies as ______.
A.
1/r
B.
1/r²
C.
r
D.
r²
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ANSWER :
A. 1/r