Electromagnetic Induction Quiz

According to Faraday's law of electromagnetic induction, the magnitude of the induced emf is directly proportional to:

• The resistance of the conductor

• The speed of the moving magnet

• The number of turns in the coil

• The rate of change of magnetic flux through the coil

Lenz's law states that the direction of the induced current in a conductor is such that it:

• Opposes the change in magnetic field that produced it

• Enhances the change in magnetic field that produced it

• Is perpendicular to the magnetic field

• Is parallel to the magnetic field

Which of the following devices uses electromagnetic induction to function?

• Incandescent light bulb

• Solar panel

• Electric fan

• Transformer

When a magnet is moved into a coil of wire, the direction of the induced current in the coil is determined by:

• The speed of the magnet

• The material of the magnet

• The direction of the magnetic field

• The direction of the motion of the magnet

Which of the following is NOT a way to induce an electromotive force (emf) in a conductor?

• Moving a magnet near the conductor

• Changing the current in a nearby conductor

• Rotating a coil in a magnetic field

• Increasing the resistance of the conductor