EASY
10th ICSE
IMPORTANT
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By reversing the direction of current in a wire, the magnetic field produced by it:

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Important Questions on Electro-Magnetism

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.
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 maximum.

 

EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(B)>Q 3
Name and state the law which is used to determine the direction of force on a current carrying conductor placed in a magnetic field.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(B)>Q 4
How will the direction of force be changed, if the current is reversed in the conductor placed in a magnetic field?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(B)>Q 5
State the unit of magnetic field in terms of the force experienced by a current carrying conductor placed in a magnetic field.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(B)>Q 6
A flat coil ABCD is freely suspended between the pole pieces of U-Shaped permanent magnet with the plane of coil parallel to the magnetic field.
(a) What happens when a current is passed in the coil?
(b) when will the coil come to rest?
(c) when will the couple acting on the coil be (i) maximum (ii) minimum?
(d) Name an instrument which makes use of the principle stated above.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 10 - Electro-Magnetism>EXERCISE-10(B)>Q 7
A coil ABCD mounted on an axle is placed between the poles N and S of a permanent magnet as shown in figure shown below.
Question Image
(a) In which direction will the coil begin to rotate when current is passed through the coil in direction ABCD by connecting a battery at the ends A and D of the coil?
(b) Why is a commutator necessary for continuous rotation of the coil?
(c) Complete the diagram with commutator, etc.For the flow of current in the coil?