Why does a uniform magnetic field do no work on a moving charged particle?
Correct answer A. The magnetic force is always perpendicular to the velocity
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Electromagnetism MCQs
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A charged particle moves parallel to a uniform magnetic field. What magnetic force acts on it?
Correct answer C. Zero
Which combination of units is equivalent to one tesla?
Correct answer D. N A⁻¹ m⁻¹
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What kind of quantity is magnetic flux?
Correct answer D. A scalar, being the dot product of B and A
Magnetic flux through a plane area A in a uniform field B is maximum when the angle between B and the vector area is ____.
Correct answer C. 0°
A loop of area 0.050 m² is in a uniform field of 0.40 T. The normal to the loop makes an angle of 60° with the field. What is the flux through the loop?
Correct answer C. 1.0 × 10⁻² Wb
What is the magnetic flux through a flat coil whose plane is parallel to a uniform magnetic field?
Correct answer D. Zero
A rectangular loop measuring 0.20 m by 0.10 m is placed with its plane perpendicular to a uniform magnetic field of 0.50 T. What is the magnetic flux through the loop?
Correct answer D. 1.0 × 10⁻² Wb
The weber, the SI unit of magnetic flux, is equivalent to which of the following?
Correct answer D. V s
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How many gauss are equal to one tesla?
Correct answer A. 10⁴ G