Electricity, Magnetism Unit Test

Bruce constructs a series circuit that has two 1.5 V batteries powering a single light bulb. What will happen if Bruce adds another bulb in the series?

• The other bulbs will dim

• The other bulbs will get brighter

• The other bulbs will not be affected

• None of the above

Two magnets with the same poles are placed near each other on a tabletop. How will the magnets behave?

• They will attract

• They will repel

• Nothing will happen

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

In a parallel circuit with 2 lightbulbs what will happen if you remove one of the bulbs without interrupting the flow of electricity?

• It will have no impact on the other bulb

• the other bulb goes out

• the other bulb gets dim

• the other bulb gets brighter

The circuit above is an example of

• a series circuit

• a NASCAR circuit

• a parallel circuit

• a formula 1 circuit

How many paths can the electric current follow?

• 1

• 2

• 3

• 4

Assume that light bulb 2 in the circuit burns out. Which of the following explains how this will affect the remaining bulbs in the circuit?

• If bulb 2 goes out, 1 & 3 will remain lit

• If bulb 2 goes out, bulb 1 will remain lit, but bulb 3 will go out.

• If bulb 2 goes out, bulb 1 will go out, but bulb 3 will remain lit.

• If bulb 2 goes out, 1 & 3 will go out

Say you added a 4th bulb to the circuit. What effect would this have on the 3 other bulbs?

• The other bulbs would become dim.

• The other bulbs would become brighter.

• The other bulbs would go out.

• The other bulbs would not be affected by an additional bulb.

A circuit contains four light bulbs. One light bulb goes out but the other three also go out. This must be a circuit.

• open

• series

• parallel

• resistant

Which of the following materials would be a good conductor of electricity?

• Wood

• Plastic

• Paper

• Copper

What will happen if you break a magnet in half?

• The north pole will demagnetize.

• The south pole will demagnetize

• Two new magnets will form

• Both poles will demagnetize