Force on a Moving Charge in Uniform Magnetic and Electric Fields NEET Questions

Physics - Magnetic Effects of Current and Magnetism

Force on a Moving Charge in Uniform Magnetic and Electric Fields MCQ Questions


1.
What is the force experienced by a charged particle moving perpendicular to a uniform magnetic field?
A.
qvB
B.
qE
C.
q(v × B)
D.
Zero
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ANSWER :
C. q(v × B)
2.
A charged particle moves in a uniform magnetic field. What is the nature of its path if its velocity is perpendicular to the field?
A.
Straight line
B.
Circular
C.
Parabolic
D.
Elliptical
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ANSWER :
B. Circular
3.
What is the condition for maximum force on a charged particle in a magnetic field?
A.
θ = 0°
B.
θ = 90°
C.
θ = 45°
D.
θ = 180°
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ANSWER :
B. θ = 90°
4.
A charged particle moves parallel to a uniform magnetic field. What is the force acting on it?
A.
Maximum
B.
Zero
C.
Constant
D.
Infinite
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ANSWER :
B. Zero
5.
Which of the following expressions correctly represents the force on a charge moving in both electric and magnetic fields?
A.
F = q(E + vB)
B.
F = q(v × B)
C.
F = q(E × B)
D.
F = q(E + v × B)
😑 View Answer Rough Work Error
ANSWER :
D. F = q(E + v × B)
6.
A proton moving in a uniform magnetic field experiences a force. This force is always ______ to its velocity.
A.
Parallel
B.
Perpendicular
C.
At an angle
D.
Random
😑 View Answer Rough Work Error
ANSWER :
B. Perpendicular