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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Magnetic moment is a

scalar quantity
universal constant
pole strength
vector quantity

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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?

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

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

24 At
2.4 At
2,400 At
240 At

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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

16 mA
1.7 mA
120 mA
12 mA

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Magnetism and Electromagnetism
The ratio of intensity of magnetisation to the magnetisation force is known as

Flux density
None of the listed here
Relatice permeability
Susceptibility

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Magnetism and Electromagnetism
A permeable substance is one

Which is a strong magnet
Which is a good conductor
Which is a bad conductor
Through which the magnetic lines of force can pass very easily

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MORE MCQ ON Magnetism and Electromagnetism

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