PhysicsCode 5054
Magnetic effect of a current
What this topic asks you to be able to do
- Describe the magnetic field produced by a current in a straight wire and in a solenoid, giving its pattern and direction, and state how the field is affected when the current's magnitude or direction is changed
- Describe the way relays and loudspeakers make use of the magnetic effect of a current, and give examples of where they are applied