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Magnetism and Electromagnetism

Magnetism and Electromagnetism
A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be

240 N
24 N
0.24 N
2.4 N

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Magnetism and Electromagnetism
Unit for quantity of electricity is

Joule
Ampere-hour
Ampere
Coulomb

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Magnetism and Electromagnetism
Gilbert is a unit of

conductance
permittivity
magnetomotive force
electromotive force

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Magnetism and Electromagnetism
The main constituent of permalloy is

Tungsten
Nickel
Chromium
Cobalt

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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?

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

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Magnetism and Electromagnetism
A basic one-loop dc generator is rotated at 90 rev/s. How many times each second does the dc output voltage peak (reach maximum)?

360
180
90
270

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MORE MCQ ON Magnetism and Electromagnetism

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