MEDIUM
9th ICSE
IMPORTANT
Earn 100

Write two advantage of an electromagnet over a permanent magnet.,

Important Questions on Magnetism

MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 10 - Magnetism>EXERCISE–10(B)>Q 11
State two differences between an electromagnet and permanent magnet.
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9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 10 - Magnetism>EXERCISE–10(B)>Q 12
Why a soft iron is used as the core of the electromagnet of an electric bell?
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9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 10 - Magnetism>EXERCISE–10(B)>Q 13
How the working of an electric bell is affected if the alternating current is used instead of direct current.
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9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 10 - Magnetism>EXERCISE–10(B)>Q 14
Name the material used for making the armature of an electric bell. Give a reason for your answer.
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9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 10 - Magnetism>EXERCISE–10(B)>Q 1
Electromagnets are made up of:
EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 10 - Magnetism>EXERCISE–10(B)>Q 2
The strength of an electromagnet can be increased by: