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Magnetism and Electromagnetism

Magnetism and Electromagnetism
Which of the following is the unit of magnetic flux density?

Tesla
Lumens
None of the listed here
Weber

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Magnetism and Electromagnetism
In the left hand rule, forefinger always represents

magnetic field
current
direction of force on the conductor
Voltage

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

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

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Magnetism and Electromagnetism
Strength of an electromagnet can be increased by

Increasing the number of turns
All of the listed here
Increasing current supply
Increasing the cross-sectional area

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Magnetism and Electromagnetism
A keeper is used to

Restore lost flux
Provide a closed path for flux
Amplify flux
Change the direction of magnetic lines

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Magnetism and Electromagnetism
The materials having low retentivity are suitable for making

Permanent magnet
Temporary Magnet
None of the listed here
Weak magnet

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MORE MCQ ON Magnetism and Electromagnetism

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