4.7.3.1

4.7.3.1 Induced potential (HT only)

4.1.3 National and global energy resources

Content

If an electrical conductor moves relative to a magnetic field or if there is a change in the magnetic field around a conductor, a potential difference is induced across the ends of the conductor. If the conductor is part of a complete circuit, a current is induced in the conductor. This is called the generator effect.

An induced current generates a magnetic field that opposes the original change, either the movement of the conductor or the change in magnetic field.

Students should be able to recall the factors that affect the size of the induced potential difference/induced current.

Students should be able to recall the factors that affect the direction of the induced potential difference/induced current.

Students should be able to apply the principles of the generator effect in a given context.


Resources

Video

Practicals

Practical

Demo:

Safety

Asthma attack risk for selected student?