electricity Flashcard

Front

A student noticed that when she put paper clips between the poles of the switch, the lights came on. This tells her the paper clips are —

Back

a conductor

Front

Why is a bulb brighter when it is powered by two batteries rather than one?

Back

The flow of electricity in the circuit is greater

Front

The bulb will not glow brighter with two batteries. What does this indicate?

Back

The flow of electricity in the circuit is greater.

Front

The space around a magnet where the force of the magnet can act is called —

Back

a magnetic field

Front

The boy plugged in his new electric train set. The electric energy is transformed into —

Back

mechanical energy

Front

A student did an experiment with a comb. What happened in this example?

Back

The comb can lift the paper because the paper is now attracted to it.

Front

A student did an experiment to test the strength of electromagnets. What conclusion could he draw from this experiment?

Back

The more times the wire is coiled around the nail, the stronger the electromagnet.

Front

What type of circuit has a complete path that allows electricity to flow through it?

Back

Closed

Front

Why do electricians always wrap wires in plastic?

Back

Plastic is a good electrical insulator.

Front

If there was a break in a circuit, which of the following materials could be placed in the gap to complete the circuit? Metal, Paper, Glass, Rubber

Back

Metal