What are the two methods to increase the strength of magnetic field by a current carrying wire?

What are the various ways in which the strength of magnetic field produced by a current-carrying circular coil can be increased?

Ways to increase the strength of magnetic field produced by a current-carrying circular coil: 1. By increasing the current passing through the coil 2. By decreasing the radius of the coil

3. By increasing the number of turns of wire in the coil

Concept: Force on a Current Carrying Conductor in a Magnetic Field

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What is an electromagnet? Give two methods by which we can increase the strength of magnetic field produced by a circular coil carrying current? [4 MARKS]

Solution

Each question: 2 Marks An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. A current-carrying coil or an insulated wire wrapped around a piece of iron behaves like an electromagnet. Two methods by which we can increase the strength of magnetic field are: 1) By increasing the number of turns of wire in the coil.
2) By increasing the current flowing in the coil.

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Magnetism is caused by the fields that exist around magnets. These magnetic fields can be investigated by looking at the effects of the forces they exert on other magnets and magnetic materials.