EASY
10th ICSE
IMPORTANT
Earn 100

By reversing the direction of current in a wire, the magnetic field produced by it:
(a)gets reversed in direction
(b)increases in strength
(c)decreases in strength
(d)remains unchanged in strength and direction.

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Important Questions on Electro-Magnetism
EASY
10th ICSE
IMPORTANT

EASY
10th ICSE
IMPORTANT

EASY
10th ICSE
IMPORTANT
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is maximum.

EASY
10th ICSE
IMPORTANT

EASY
10th ICSE
IMPORTANT

EASY
10th ICSE
IMPORTANT

MEDIUM
10th ICSE
IMPORTANT
(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

(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?
