EASY
10th ICSE
IMPORTANT
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State two differences between an electromagnet and a permanent magnet.

Important Questions on Electro-Magnetism

EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(A)>Q 29
Why is soft iron used as the core of the electromagnet in an electric bell?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(A)>Q 30
How is the working of an electric bell affected, if alternating current be used instead of direct current?
HARD
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(A)>Q 31
The incomplete diagram of an electric bell is given below. Complete the electric circuit diagram and label its different parts.
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EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(A)>Q 32
Name the material used for making the armature of an electric bell. Give a reason for your answer.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(A)>Q 1
The presence of magnetic field at a point can be detected by :
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(A)>Q 2
By reversing the direction of current in a wire, the magnetic field produced by it:
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(B)>Q 1
Name three factors on which the magnitude of force on a current carrying conductor placed in a magnetic field depends and state how does the force depend on the factors stated by you.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(B)>Q 2
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is zero.