D.4.4 (HL)—Lenz’s law Topic Practice
D.4.4 (HL)—Lenz’s law Topic Practice
Use Lenz's law to predict current direction, opposing force and damping by tracking how the magnetic flux through a loop changes.
How this is tested
- use a field diagram to decide clockwise or anticlockwise current from increasing flux into or out of the page
- explain terminal speed or stopping by linking induced current to a magnetic force that opposes the motion
- explain damping with a coil circuit diagram: induced current makes an opposing field and dissipates energy