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Magnetism and Electromagnetism

Magnetism and Electromagnetism
A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

2M
M/4
M
M/2

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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

12 mA
120 mA
1.7 mA
16 mA

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Magnetism and Electromagnetism
Gilbert is a unit of

magnetomotive force
electromotive force
conductance
permittivity

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Magnetism and Electromagnetism
For a given wire-wound core, an increase in current through the coil

Reverses the flux lines
Increases the flux density
Causes no change in flux density
Decreases the flux density

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Magnetism and Electromagnetism
Fleming's left hand rule is used to find

Direction of flux in a solenoid
Direction of force on a current carrying conductor in a magnetic field
Polarity of a magnetic pole
Direction of magnetic field due to current carrying conductor

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Magnetism and Electromagnetism
A magnetic field exists around

Moving Charges
Iron
Copper
Aluminium

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MORE MCQ ON Magnetism and Electromagnetism

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