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Magnetism and Electromagnetism

Magnetism and Electromagnetism
When a solenoid is activated, the force that moves the plunger is

a steady current
varying voltage
a permanent magnetic field
an electromagnetic field

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Magnetism and Electromagnetism
Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be

0.1 N
10 N
100 N
0.01 N

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Magnetism and Electromagnetism
What is the magnetomotive force (mmf) of a wire with 8 turns carrying three amperes of current?

2,400 At
2.4 At
240 At
24 At

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Magnetism and Electromagnetism
What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600 Wb?

600 T
6,000 T
600 T
6 T

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Magnetism and Electromagnetism
There is 900 mA of current through a wire with 40 turns. What is the reluctance of the circuit if the flux is 400 Wb?

14,400 At/Wb
1,440 At/Wb
90,000 At/Wb
9,000 At/Wb

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Magnetism and Electromagnetism
Which of the following is a vector quantity?

Flux density
Magnetic field intensity
Relalative permeability
Magnetic potential

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MORE MCQ ON Magnetism and Electromagnetism

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