Physics
Related Questions
Name one device that uses an electromagnet.
Why is soft iron used as the core of the electromagnet in an electric bell?
State two ways through which the strength of an electromagnet can be increased.
Figure shows a coil wound around a soft iron bar XY. (a) State the polarity at the end X and Y as the switch is pressed. (b) Suggest one way of increasing the strength of the electromagnet so formed.
