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Magnetism and Electromagnetism

Magnetism and Electromagnetism
What is the magnetomotive force in a 75-turn coil of wire when there are 4 A of current through it?

187 At
300 At
30 At
18.75 At

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Magnetism and Electromagnetism
The materials are a bit inferior conductors of magnetic flux than air.

None of the listed here
Ferromagnetic
Dielectric
Diamagnetic

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Magnetism and Electromagnetism
The force between two long parallel conductors is inversely proportional to

Radius of conductor
Product of current in two conductors
Distance between the conductors
Current in one conductor

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Magnetism and Electromagnetism
Magnetism of a magnet can be destroyed by

Heating
By inductive action of another magnet
Hammering
All of the listed here

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Magnetism and Electromagnetism
The voltage induced across a certain coil is 200 mV. A 120 resistor is connected to the coil terminals. The induced current is

1.7 mA
120 mA
12 mA
16 mA

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Magnetism and Electromagnetism
Which of the following materials are diamagnetic?

Silver
Silver and copper
Iron
Copper

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MORE MCQ ON Magnetism and Electromagnetism

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