Electricity & Magnetism Basics

What is electricity?

• An invisible force that we don't understand.

• An invisible force that relies on the movement of electrons.

• A force that can be used for human activities.

What are the moving particles that move to create an electrical current?

• Protons

• Neutrons

• Atoms

• Electrons

Which type of circuit does this represent?

• Parallel

• Series

Pick all the materials that would be a conductor.

• Metal frying pan

• Rubber

• Plastic

• Copper wire

• Stainless Steel

Which of these is an insulator?

• Rubber

• Copper penny

• Iron nail

• Plastic

• Cloth

___ Law says that the Induced current is proportional to the change of magnetic flux 

• Lenz'
• Faraday's
• Ampere's

Find the direction of the magnetic force.

• Into the screen
• Out of the screen
• Right
• Left

Can you produce current in a wire with a magnet that is sitting still?

• Yes; having a magnet near a wire is enough to excite the electrons

• No; the magnetic field has to be changing to excite the electrons

• No; magnets cannot create electricity

A coil spins in a magnetic field. Of the following

which causes an increase in the induced EMF in

the coil?

• Spinning the coil faster

• Removing the coil from the magnetic field

• Keeping the flux at a constant rate

• Decreasing the number of turns of wire in

  the coil

Voltage can be induced in a wire by

• a. moving the wire near a magnet.
• b. moving a magnet near the wire.
• c. changing the current in a nearby wire.
• d. all of these