Electricity Quiz

What is an electric circuit?

• An electric circuit is an open loop through which an electric current can flow.

• An electric circuit is a closed loop through which an electric current can flow.

Name two examples of electrical conductors.

• Copper and aluminum

• Steel and iron

• Gold and silver

• Plastic and wood

What is the difference between series and parallel circuits?

• Series circuits are used for AC power, while parallel circuits are used for DC power

• The difference between series and parallel circuits is the color of the wires used

• In series circuits, the current flows in a straight line, while in parallel circuits, the current flows in a zigzag pattern

• The main difference between series and parallel circuits is the way the components are connected and how the current flows through them.

Explain how an electrical bell works.

• An electrical bell works by using a solar panel to generate the sound

• An electrical bell works by using an electromagnet to attract a metal armature, causing it to strike the bell and produce sound.

• An electrical bell works by using a wind-up mechanism to produce the sound

• An electrical bell works by using a battery to power the sound

What is the heating effect of electricity?

• The heating effect of electricity is the creation of magnetic fields

• The heating effect of electricity is the generation of sound

• The heating effect of electricity is the phenomenon where electric current passing through a conductor produces heat.

• The heating effect of electricity is the production of light

What is the unit of electrical power?

• kelvin (K)

• joules (J)

• ohms (Ω)

• watts (W)

What is the role of a fuse in an electric circuit?

• To increase the current in the circuit

• To regulate the voltage in the circuit

• to protect the circuit from overcurrent by breaking the circuit when the current exceeds a certain level.

• To reduce the resistance in the circuit

Why is it important to insulate electrical wires?

• To improve the appearance of the wires

• To attract more insects to the area

• To increase the risk of electrical hazards

• To prevent electrical shocks, fires, and short circuits.

What is the purpose of a switch in an electric circuit?

• To open or close the circuit and control the flow of electricity.

• To increase the speed of the electricity

• To regulate the temperature of the circuit

• To change the color of the electricity

What happens to the brightness of bulbs in a series circuit if one bulb goes out?

• The brightness of all bulbs in the series circuit will decrease or they will all go out.

• The brightness of the remaining bulbs will increase

• The brightness of the remaining bulbs will stay the same

• The circuit will automatically repair itself and all bulbs will light up again