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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Temporary magnets are used in

Loud speakers
Motors
All of the listed here
Generators

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Magnetism and Electromagnetism
Which of the following materials are diamagnetic?

Copper
Silver
Silver and copper
Iron

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Magnetism and Electromagnetism
One telsa is equal to

1 Wb/m
1 mWb/m²
1 Wb/m²
1 Wb/mm²

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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

120 mA
16 mA
12 mA
1.7 mA

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Magnetism and Electromagnetism
The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength?

25 AT/m
0.25 AT/m
250 AT/m
2500 AT/m

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Magnetism and Electromagnetism
Magnetic moment is a

scalar quantity
pole strength
universal constant
vector quantity

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MORE MCQ ON Magnetism and Electromagnetism

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