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WorksheetsElectrical Systems and Uses of Electricity
Total questions: 20
Worksheet time: 10mins
One of simple action to conserve electricity that we can do is ...
turn all the lights on
open the refrigerator's door every time we want
keep the AC on when there is nobody in the room
switch off all electrical equipment that are not in use
These are how we use electricity safely, except...
don't touch electricity with wet hands
use electrical equipment with exposed wires
don't put too many plugs into one socket
make sure that electrical equipment have plastic or wooden handles
The meaning of the picture is...
don't forget to wash your hands
don't touch electricity with wet hands
don't touch the wall
don't touch the hand
What is the purpose of having a battery in the electrical circuit?
It powers the electricity.
It is an energy source.
It contains chemicals.
It has both the positive and negative terminals
Arrange the bulbs in the order of increasing brightness.
Which of the following bulbs with light up?
What should he do to make the bulb light up?
Study the circuit diagram below.
Which one of the following will make each bulb in the circuit less bright?
Removing one bulb from the circuit
Removing the switch from the circuit
Adding one bulb in series to the circuit
Adding one battery in series to the circuit
Four pupils list down ways of using electricity responsibly in their daily lives as shown below.
Alicia: I use energy-saving bulbs for all the lights at home.
Billy : I always leave the laptop charging when I am not using it.
Citra: I switch on the fan and air-conditioner together to cool the room.
Dini: I always switch off all the fans and lights when I am the last to leave the classroom.
Which of the pupils are helping to conserve electricity?
Alicia
Billy and Citra
Alicia and Dini
Billy, Citra and Dini
Irfan wants to find out if the arrangement of the bulbs in a circuit affects their brightness. He sets up four circuits as shown below.
Which pair of circuits should he use to ensure a fair test?
P and S
P and Q
R and P
R and Q
Study the circuit diagram below.
What can object X be so that only bulbs L and M light up?
Battery
Copper wire
Rubber band
Aluminum foil
Halimah wants to find out how the arrangement of the batteries in a circuit will affect the brightness of the bulbs. Which variables should be kept constant?
A: Number of bulbs in each circuit.
B: Brightness of bulbs in each circuit.
C: Number of batteries in each circuit.
D: Arrangement of batteries in each circuit.
A only
C only
A and C only
A, B, C and D
A: Copper wire B: Plastic ruler
C: Wooden chopsticks D: Iron nail
The picture above is example of ...
electrical sockets
electrical equipment
electrical plug
Which of the following could materials W, X and Y be?
X – cloth
Y - Iron
X – glass
Y - plastic
X – copper
Y - rubber
X – copper
Y - gold
Based on the results above, which of the objects P, Q or R is a conductor of electricity?
When the switch was closed, all the bulbs lighted up. Then, when one of the bulbs fused, all the bulbs went off. Which bulb was fused?
