Advertisements
Advertisements
Question
Electromagnets are made up of :
Options
steel
copper
soft iron
aluminium
Advertisements
Solution
Electromagnets are made up of : soft iron
APPEARS IN
RELATED QUESTIONS
Why is soft iron used as the core of the electromagnet in an electric bell?
Name one device that uses an electromagnet.
The strength of the electromagnet can be increased by
You are required to make an electromagnet from a soft iron bar by using a cell, an insulated coil of copper wire and a switch.
- Draw a circuit diagram to represent the process.
- Label the poles of the electromagnet.
State two advantages of an electromagnet over a permanent magnet.
State two differences between an electromagnet and a permanent magnet.
Why is soft iron used as the core of the electromagnet in an electric bell?
What is an electroscope? Describe the different stages of charging a gold leaf electroscope negatively with the help of a diagram.
Unlike magnetic poles ______ whereas like poles ______.
Assertion (A): When 2 long parallel wires, hanging freely are connected in parallel to a battery, they come closer to each other.
Reason (R): Wires carrying current in opposite directions repel each other.
