Biot-Savart Law and its Application to Current Carrying Circular Loop NEET Questions

Physics - Magnetic Effects of Current and Magnetism

Biot-Savart Law and its Application to Current Carrying Circular Loop MCQ Questions


13.
For a circular current loop, the direction of the magnetic field at the center is given by ______.
A.
Right-hand thumb rule
B.
Left-hand rule
C.
Coulomb’s law
D.
Fleming’s left-hand rule
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ANSWER :
A. Right-hand thumb rule
14.
The magnetic field due to a circular current loop at its center is proportional to ______.
A.
Radius
B.
Current
C.
Current and radius
D.
None of these
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ANSWER :
B. Current
15.
What happens to the magnetic field at the center of a circular loop if its radius is doubled, keeping the current constant?
A.
Becomes one-fourth
B.
Becomes half
C.
Remains same
D.
Doubles
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ANSWER :
A. Becomes one-fourth
16.
A current-carrying circular loop behaves as a ______.
A.
Magnetic dipole
B.
Capacitor
C.
Electric dipole
D.
Resistor
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ANSWER :
B. Capacitor
17.
Biot-Savart law is used to determine

NEET - 2015

A.
Magnetic field due to a moving charge
B.
Electric field due to a point charge
C.
Gravitational field due to a mass
D.
Electric potential due to a dipole
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ANSWER :
A. Magnetic field due to a moving charge
18.
The Biot-Savart law states that the magnetic field due to a current element is inversely proportional to ______.
A.
Current
B.
Distance squared
C.
Square of the distance
D.
Fourth power of distance
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ANSWER :
C. Square of the distance