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Uses of Electromagnets MCQ with Answers PDF Download

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The MCQ: A good permanent magnet should produce a high magnetic field with a PDF, "Uses of Electromagnets" App Download (Free) with high mass, low mass, dense mass, and thick mass choices for online certificate courses. Study electrical circuits and electric currents quiz questions, download Amazon eBook (Free Sample) for online classes.

Class 7 Science: Uses of Electromagnets MCQs PDF Download

MCQ: A good permanent magnet should produce a high magnetic field with a

A) high mass
B) low mass
C) dense mass
D) thick mass

MCQ: If someone carrying a knife or gun passes through a detector, it alters the rate of

A) current
B) voltage
C) resistance
D) magnetic field

MCQ: Another example of 'electromagnets' in trains is

A) bullet train
B) passenger train
C) maglev train
D) cargo train

MCQ: 'Earphones' are

A) magnets
B) small loudspeakers
C) soft speakers
D) magnetized speakers

MCQ: When small hammer is attracted by electromagnet, the bell

A) sparks
B) vibrates
C) stops
D) strucks

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Uses of Electromagnets MCQs Book Questions

A good permanent magnet should produce a high magnetic field with aThe flowers which are pollinated by means of wind haveIf you are the only conductor around, the electricity will flow throughLight bends in all materials atSounds with a high frequency which a human ear can detect are known asAn example of good electrical conductor is