Electromagnets

IMPORTANT

Electromagnets: Overview

This topic covers concepts, such as, Magnetic Field Lines Due to Current through Straight Conductor, Electromagnet, Magnetic Resonance Imaging (MRI) & Maglev Train etc.

Important Questions on Electromagnets

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Science>Magnets>Electromagnets> Q 1

What is the role of electromagnets in relay ?

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Science>Magnets>Electromagnets> Q 2

Relays have electromagnets for connecting the other circuit.

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Science>Magnets>Electromagnets> Q 3

Electromagnetic field strength is current dependent.

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Science>Magnets>Electromagnets> Q 4

What is the relationship between strength of electromagnet and current ?

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Science>Magnets>Electromagnets> Q 5

Write a short note on maglev trains.

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Science>Magnets>Electromagnets> Q 6

Write a short note on the temporary magnet.

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Science>Magnets>Electromagnets> Q 7

How does magnetic resonance imaging work?

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Science>Magnets>Electromagnets> Q 8

Describe the uses of electromagnetic crane.

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Science>Magnets>Electromagnets> Q 9

What must happen for an electromagnet to have a magnetic field?

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Science>Magnets>Electromagnets> Q 10

What is the relationship between a current in a wire and a magnetic field?

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Science>Magnets>Electromagnets> Q 11

Where is an electric crane used?

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Science>Magnets>Electromagnets> Q 12

Name the two applications of:
Magnetic effect of current