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15 questions
Which of the following is the source of electricity? Tick.
Accumulator
Food
Hydroelectric power station
Wind
Tool X is one of the sources of electricity. How does tool X functions?
Produce light energy
Transform solar energy into electrical energy
Produce heat energy
Safe energy consumption
Hydroelectric energy is the energy which is generated from ____
wind
the Sun
generator
water
This is the symbol of _____
a switch
a lightbulb
a dry cell
connecting wire
This symbol represents component P, which is
dry cell
connecting wire
switch
lightbulb
In which circuit the bulbs will light up brighter?
X
Y
Which of the following affect the brightness of bulb? Tick the correct answers.
Type of circuit
Number of dry cell
Size of bulb
Number of bulb
What is the type of this electrical circuit?
Parallel circuit
Series circuit
Which bulb will light up the dimmest?
A
B
C
If bulb J is broken, what will happen to the other bulbs? Tick the correct answer.
bulb K lights up
bulb L lights up
bulb K and L do not light up
What is the function of a switch in an electrical circuit?
to light up a bulb
to enable the electrical energy to flow
to complete or break a circuit
to produce electricity
Which bulbs will light up brighter?
A
B
What will be observed when switch S1 is closed?
bulb A lights up
bulb B light up
bulb A and bulb B light up
bulb A and bulb B do not light up
Which of the following shows a proper way to handle electrical appliances?
S
T
None above
What will happen if we connect all the plugs into the same socket? Tick the correct answers.
short circuit
fire
lightning
save electrical energy
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