What is an electromagnet?

Important Questions on Electricity and Magnetism

EASY

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 11

Name the material of an electromagnet?

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 12

Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 13

You are given a U shaped soft iron piece, insulated copper wire and a battery. Draw a circuit diagram to make a horse shoe electromagnet ?

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 14

Name two factors on which the strength of magnetic field of an electromagnet depends?

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 15

State two ways by which the strength of magnetic field of an electromagnet can be increased?

EASY

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 16

State two common uses of electromagnets?

MEDIUM

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 17

Name a domestic device in which an electromagnet is used?

HARD

7th ICSE

IMPORTANT

Concise PHYSICS Middle School 7>Chapter 7 - Electricity and Magnetism>TEST YOURSELF>Q 18

Draw a neat and labelled diagram of an electric bell and describe its working?