1Question
Which of these is a source of electrical energy?
2Question
What do we call a material that allows electric current to pass through it easily?
3Question
Which part of a simple circuit provides energy?
4Question
Which material is the best conductor of electricity?
5Question
What happens when a circuit is complete?
6Question
Which of these is an insulator?
7Question
What is the main function of a switch in a circuit?
8Question
Which symbol usually represents a light bulb in a circuit diagram?
9Question
If a battery is connected to a bulb with wires and the bulb lights up, what kind of circuit is it?
10Question
Which of these items uses electrical energy to produce light and heat?
11Question
Why are wires usually covered with plastic?
12Question
What is the flow of electric charge called?
13Question
Which object would most likely let electricity pass through it?
14Question
What happens when a switch is turned off in a simple circuit?
15Question
Which device changes electrical energy into motion?
16Question
Which of these is the best example of a circuit?
17Question
What is the purpose of the battery in a circuit?
18Question
Which symbol is commonly used for a battery in a circuit diagram?
19Question
Why does a bulb not light if one wire is disconnected?
20Question
Which is the safest material to touch a wire with when electricity is involved?
21Question
What unit is used to measure electric current?
22Question
Which of these uses electricity?
23Question
If you add another bulb to a simple circuit in series, what usually happens to the brightness of each bulb?
24Question
What is one reason metals are used in electrical wires?
25Question
Which part of a circuit diagram shows the path electricity can travel?
26Question
What happens to a compass near a wire carrying electric current?
27Question
Which statement about insulators is correct?
28Question
Why is it important to use a fuse or circuit breaker in a home?
29Question
Which of these would likely have the greatest resistance?
30Question
What is resistance?
31Question
In a series circuit, what happens if one bulb burns out?
32Question
Which type of circuit gives electricity more than one path?
33Question
Why are parallel circuits useful in homes?
34Question
If two bulbs are connected in parallel, what happens to the brightness of one bulb when the other is turned off?
35Question
Which best describes electrical energy in a battery-powered flashlight?
36Question
What does an electric motor do when current passes through it?
37Question
Why might a wire get warm when a large current flows through it?
38Question
Which of these is the best way to reduce the risk of electric shock?
39Question
What is the main reason appliances in a circuit need a source of energy?
40Question
A student wants to design a circuit so that each light can be controlled separately. Which type of circuit should they choose?