Electromagnetism

What makes electromagnets different from regular magnets?

• they can be switched off and on

• they use less energy

• they are more user-friendly

• they do not pollute the environment

Does adding loops of wire to a solenoid increase or decrease its strength?

• Increase

• Decrease

• Both

• Neither

Which kind of circuit only has one path for electricity to flow?

• Series

• Parallel

• Series and Parallel

Which kind of circuit has more than one path for electricity to flow?

• Series

• Parallel

• Series and Parallel

If a bulb is not working in a series circuit, what happens to the other bulbs?

• none will work

• the rest will work

If a bulb is not working in a parallel circuit, what happens to the other bulbs?

• none will work

• the rest will work

When a current flows through a wire, it creates a _______ around the wire.

• magnetic field

• magnetic pole

• compass

• attraction

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which three materials would allow you to build an electromagnet?

• Battery, Wire, Nail

• Battery, Tape, Paper

• Wire, Nail, Paper Clip

• Sandpaper, Tape, Wire

Tags

NGSS.MS-PS2-3

In a neutral object, what must be true about the numbers of protons and electrons?

• They are equal

• There are more protons than electrons

• The protons and and neutrons must be equal

• There are more electrons than protons

Which would make the strongest electromagnet?

• A battery with 4 wire coils around a nail

• A battery with 6 wire coils around a nail

• A battery 10 wire coils around a nail

• A battery with 8 wire coils around a nail

Tags

NGSS.MS-PS2-3