A simple electromagnet is made from a coil or solenoid carrying current around a magnetic core. Exam questions may ask you to describe or label the coil, current supply and core.
Magnetic Resonance Imaging (MRI) machines can take scans of the inside of a patient.
There is an electromagnet inside the MRI machine.
Describe the construction of an electromagnet.
You may draw a diagram to help your answer.
- coil / solenoid
- core
- current
- named magnetic material, e.g. soft iron or steel
Accept:
- all marks can be scored by labelled diagram(s)
- material that magnetises and demagnetises easily