What symbol is this?

• switch
• wire
• bulb
• battery

What symbol is this?

• switch
• wire
• bulb
• battery

This is the symbol for a ______.

• switch
• wire
• bulb
• battery

To have a complete electric circuit, the path must be _____

• closed
• open

When the switch is ___________, the lamp lights up.

• open
• closed

Is the circuit in the picture opened or closed?

• opened
• closed
• neither

The ________ is the source of electricity in a circuit.

• battery
• switch
• wire
• bulb

Metals are good conductors of electricity.

Plastics are good conductor of heat.

If u add more batteries to your circuit with one light bulb it will get brighter.

What safety precaution should this person take?

• Don't touch the wall
• Don't touch electricity with wet hands
• Don't forget to switch off the light

Why is flying kites near power lines dangerous?

• Electricity may flow through your kite, string and body. It can cause electric shock.
• Electricity may flow through your kite, string and to the ground.
• Electricity may flow through your kite. Your kite may be damaged.

Why is it dangerous to put objects or fingers into sockets?

• Electricity may flow through the object and to the ground. It can cause electric shock to the house.
• Electricity may flow through the object and to your body. It can hurt you.
• Electricity may flow through the object and to our body. It can cause an electric shock.

Choose the correct sentence.

• This circuit will NOT work because it is an open circuit.
• This circuit will work because it is a closed circuit.
• This circuit will NOT work because it is a closed circuit.

The circuit below illustrates two light bulbs, a power source, and copper wires. Which would happen to the circuit if additional power source were added?

• The light bulbs will shine brighter
• The copper wires will not allow electricity to flow to the light bulbs
• The light bulbs will dim
• The additional power source will only light up one light bulb.

Which electric circuit arrangement will light the bulb?

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

• 0
• 1
• 2
• 3

The diagram below shows a bulb and a wire attached to a battery. Why would this bulb be lit?

• The wire is wrapped to the bottom of the bulb that is a type of conductor.
• The wire is wrapped to the glass and the glass is an insulator causing the light to grow
• The wire is wrapped to the battery and that is why the bulb is glowing.
• The wire is wrapped to the bottom of the bulb with a metal case, a conductor which is touching the battery causing the light bulb to glow.

A group of students are building a circuit. They found out that the circuit is opened. Which of the following should they do make the circuit closed?

• The bulb needs to be replaced in order to make it a closed circuit
• The wires need to be attached to the battery not the battery holder
• Switching one of the batteries so that the positive end connects to the other battery.
• Adding new batteries so that the electric current can flow through the wires.

A group of students constructed the circuit with colored light bulbs. If switch 1 was closed, which bulbs will light up?

• The red and blue bulb will light up and the white will not light up.
• All the bulbs will light up.
• The blue and white bulb will light up and the red will not light up.
• The red and white bulb will light up and the blue bulb will not light up.