Class 8 (Science Assignment)

 

Electricity and Magnetism Around Us

One morning in science class, Teacher Anil brought a simple setup: a battery, some wires, a small bulb, and a switch. He connected the wire from the battery to the bulb and then to the switch. When the switch was closed, the bulb lit up. He explained that this is called an electric circuit, and electricity flows only when the circuit is complete.

He then showed a nail wrapped with a copper wire connected to a battery. When the current passed through the wire, the nail started attracting small pins and paper clips. The teacher said this is called an electromagnet. It becomes magnetic only when electricity flows through it.

Teacher Anil also placed a compass near the wire. When electricity flowed through the wire, the compass needle moved slightly. He explained that electric current produces a magnetic field around the wire. This shows that electricity and magnetism are closely related.

He told the students that many devices in daily life, such as electric bells, fans, and motors, use both electricity and magnetism to work. Without this relationship, modern technology would not function properly.

Questions

1.     What is required for an electric bulb to light up in a circuit?

2.     What is an electromagnet and how is it made in the passage?

3.     What happened to the compass needle when current flowed through the wire?

4.     How are electricity and magnetism related according to the passage?

5.     Name two household devices mentioned in the passage that use electricity and magnetism.