Series Circuits

The picture shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut at the point shown by the arrow?

• 0

• 1

• 2

• 3

Which of these changes to the electric circuit shown will cause the lightbulb to light up? (5.6B)

• Straightening the wire so that the current can flow more easily

• Adding a switch and more wire so that the current can flow more easily

• Turning one battery so that its positive end connects to the other battery's negative end

• Making the length of wire the same on both sides of the lightbulb

Tags

NGSS.3-5-ETS1-2

NGSS.4-PS3-2

The diagram shows the metal posts that are usually found on a battery. The battery can be connected to a bell and a switch to produce sound. Which statement best explains why there are two metal posts on the battery?

• The battery needs only one metal post to connect to the bell, but the other metal post is present in case the first post fails to work.

• The battery needs to form a complete circuit that starts with one metal post and ends with the other metal post.

• One metal post makes a complete circuit with the switch, and the other metal post makes a complete circuit with the bell.

• One metal post makes the bell start to ring, and the other metal post makes the bell ring louder.

Tags

NGSS.MS-ETS1-1

The circuit shown does not work. Which procedure would most likely allow the bulbs to light?

• Open the switch and then connect the two wires that are attached to the wood block

• Switch the positions of the two wires that are connected to the battery and the open the switch

• Move the switch closer in the circuit to the battery

• Connect the two wires that are attached to the wood block

Tags

NGSS.3-5-ETS1-2

NGSS.3-5-ETS1-3

NGSS.3-PS2-3

NGSS.4-PS3-2

What will happen to this circuit if you open the switch?

• 2 light bulbs will stay on

• all the light bulbs will go out

• the battery will not work

• the light bulbs will be dim