A string of light with small bulbs is shown below. The bulbs are connected by wire that is covered with an insulator. When the lights are on, electricity travels in--

Which of these changes to the electric circuit shown above will cause the lightbulb to light up?

The diagram 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?

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?

Most cars have lights, power locks, radios, and other equipment that use electricity. Electric circuits power this equipment. Each circuit has a fuse that completes it. The picture below shows one type of fuse a car may have. Which of these things describes one thing that could happen if the wire in a car fuse burns out?