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WorksheetsHW P4 CH.8 ELECTRIC CIRCUIT
Total questions: 15
Worksheet time: 3hrs 30mins
An electric circuit can consist of all the following objects except for a ________.
Bulb
Battery
Wire
Wooden rod
We need ________ for electric current to flow through a circuit.
A close switch and a bulb
An open switch and a battery
An open switch and a bulb
A close switch and a battery
How do we make the lamp brighter in a circuit?
Add another cell
Add another lamp
Add another switch
Make the wire longer
Which of the following is an electrical insulator?
Metal knife
Copper wire
Plastic spoon
Aluminium foil
Which of the following is the power source in the circuit?
Battery
Light bulb
Wire
Switch
How do we make the lamp dimmer in a circuit?
Add another cell
Add another lamp
Add another switch
Make the wire longer
Class 4 students make a circuit using two lamps, a cell, a closed switch and wires.
Which diagram shows the circuit made by the students?
Which one material is the conductor?
Glass
Water
Plastic
Copper
Will this circuit light the bulbs?
Yes, both will light up
Yes, but only one on the left
Yes, but only the one on the right
No, neither of the bulbs will light up
When a switch in electrical circuit is open, Then the circuit is . . . .
Turning lights on
Working and gives energy
Continue their electric current
Broken and charges cannot flow
(Complex multiple choice)
Mary wants to make a circuit. She uses a lamp.
Which other parts should she use so that the lamp light up?
Cell
Torch
Wires
Open switch
What happens when we turn the switch off?
The lamp will not light up
The electric current can flow
There is a break in the circuit
There are no break in the circuit
Which of the parts A, B, C and D need to be connected to an electric circuit in order for the bulb to light up?
A
B
C
D
What happens when we turn the switch on?
The lamp will light up
There is a break in the circuit
The electric current can not flow
There are no break in the circuit
Class 4 made the circuit beside. There is a break in the circuit. Which of the following items will close the circuit so the lamp will light up?
Iron nail
Silver coin
Plastic straw
Rubber band
