Electric Currents

If the voltage stays the same, but the resistance goes up, the current will....

• increase (speed up)

• decrease (slow down)

• stay the same

To have a complete electric circuit, the path must be _____

• small

• closed

• big

• open

An electric current flows _____ unless it is disrupted in some way

• continuously

• in spurts

• unevenly

• drop by drop

An electric current is made up of _____ charged electrons

• neutral

• negative

• positive

• balanced

Electricity that flows constantly in one direction on a given path.

• current electricity

• static electricity

• electron pathway

• conductor

You are setting up a solar panel system for your home and you need a type of current that only flows in one direction for the system to work efficiently. What is this type of current called?

• Direct Circuit

• Digital Current

• Direct Current

• Digital Circuit

What happens if you reverse the direction of current in an electromagnet's coil?

• The magnetic poles switch places

• The electromagnet stops working

• The electromagnet becomes a permanent magnet

• Nothing changes

Tags

NGSS.MS-PS2-3

How can you make a simple electromagnet at home?

• Wrapping a wire around a plastic tube and connecting it to a battery

• Placing a magnet in the freezer

• Wrapping a wire around an iron nail and connecting it to a battery

• Rubbing a needle with silk

Tags

NGSS.MS-PS2-3

What happens to the magnetic field if you increase the current in a wire?

• It disappears

• It becomes weaker

• It stays the same

• It becomes stronger

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the best material to use for the core of an electromagnet?

• Plastic

• Wood

• Iron

• Glass