EASY
Earn 100

Explain about a horse shoe magnet.

Important Questions on Exploring Magnets

EASY

Write three main characteristics of a magnet.

EASY

Tick the magnet that can lift a heavier piece of iron. Give reasons for your choice.

MEDIUM
How are electromagnets different from bar magnets?
EASY
Explain the difference between natural magnets and artificial magnets.
MEDIUM
Artificial magnets are made in different shapes. Name these shapes and draw their sketches. 
MEDIUM
The figure given below, shows the current flowing in the coil of wire wound around the soft iron horse shoe core. State the polarities developed at the ends A and B.
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EASY
It is simple to find poles of a bar magnet. Can you suggest a method to find the poles of a horseshoe magnet?
EASY
Horse-shoe shaped magnets do not have poles.
EASY
What are artificial magnets? Name their different shapes.
EASY

Statement given below is incorrect. Write correct statement.

Magnetite is a powerful artificial magnet.

MEDIUM
Show with the aid of a diagram how a wire is wound on a U-shaped piece of soft iron in order to make it an electromagnet. Complete the circuit diagram and label the poles of the electromagnet.
EASY
The natural magnet was discovered in _____.
EASY

(a) Name two magnetic poles which attract each other.

(b) Name two magnetic poles which repel each other.

EASY
State two advantages of an electromagnet over a permanent magnet.
EASY
There exists only one shape of a magnet, which is bar magnet.