Electricity and Magnetism

Levi is wanting to light a bulb. What does he need to get the bulb to light?

• A battery and a balloon

• A battery and a wire

• A paper clip and a wire

• A switch and a wire

A series circuit has ____ path(s) that the electric current can take.

• One

• Two

• More than one

Electricity is the flow of _________.

• Protons

• Neutrons

• Electrons

What kind of circuit is this?

• series
• parallel

Which statement is true?

• Lights in the series circuit are brighter than the parallel.

• Lights in the parallel circuit are brighter than the series.

• Both circuits have the same brightness

• Neither circuit will light the bulbs

Pick the correct sentence.

• This circuit will work because it is a closed circuit.
• Energy will freely flow in this circuit.
• This circuit will not work because there is no energy source.
• This circuit will not work because there is no switch.

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

What THREE ways are electromagnets different from permanent magnets?

• they can be turned off and on

• they can increase in strength by increasing the current in the wire

• they are smaller in size

• they can change which is the north and south pole

What two forces are required for generators and electric motors to work? 

• magnetism and thermal 
• electricity and thermal 
• electricity and magnetism 
• magnetism and radiant 

Generators are devices that convert _____ energy into _____ energy.

• chemical; mechanical
• mechanical; electrical
• electrical; mechanical
• potential; kinetic