The magnetic field produced by a current loop is identical to that produced by a short bar magnet A current-carrying coil of wire produces a magnetic field
Bar electromagnet: The first electromagnet we will make is bar magnet We will need Materials: 1 1 Amp solar panel 2 At least a 2 inch long galvanized
locations around a bar magnet and an electromagnet • Relate magnetic field strength to distance quantitatively and qualitatively and qualitatively
Magnetic field The magnetic field around an electromagnet is just the same as the one around a bar magnet It can, however, be reversed by reversing the
Describe the relationship between electricity and magnetism • Compare an electromagnet to a bar magnet ENERGY USE AND DELIVERY – LESSON PLAN 3 3
The poles in the bar magnet are at the ends One pole is labeled N The poles are the places where its magnetism is strongest Same poles repel each other:
Electromagnetism Magnetic Fields using a compass placed at different points around a bar magnet An electromagnet is a solenoid with an iron core
A permanent magnet is one with its own magnetic field The magnetism cannot be turned on or off e g a bar magnet or a horseshoe magnet
The field shape outside a solenoid is similar to that of a bar magnet Section 1: Magnetism and electromagnetism Key Terms 1 Pole The places on a magnet where
inducing field or current Electromagnet a soft metal core made into a magnet by the passage of electric Section 2: Bar Magnets and Attraction and Repulsion
Compasses can be used to draw the magnetic field round a bar magnet Winding a wire into a coil of many turns ( solenoid ) and passing a current through the
Revision Pack Topic 7- Magnetism Electromagnetism Permanent uniform The magnetic field around a solenoid has a similar shape to that of a bar magnet