WorksheetsP5 Electricity
Total questions: 45
Worksheet time: 40mins
The student conducted an experiment with circuits. Why was the bulb bright when he closed the switch?
The switch produced an electric current
Closing the switch broke the circuit
Closing the switch completed the circuit
The switch did not make a difference
What is a circuit with several paths for electricity to flow?
conductor
series circuit
parallel circuit
open circuit
A PATH along which electricity can flow is a ___________________?
light bulb
switch
insulator
circuit
When a circuit is closed, the light bulb is _____________?
On
Off
When a circuit is open, the circuit is _________?
On
Off
What is a circuit that only has ONE path for electricity to flow?
series circuit
closed circuit
parallel circuit
light bulb
When the switch is closed, the bulb lights up. What could X be?
rubber
plastic
wood
lead
All switches are closed and L1 and L2 light up. Which switch should be opened so that both L1 and L2 will not light up?
S1
S2
S3
S4
All switches are closed and L1 and L2 light up. Which switch should be opened so that only L2 lights up?
S1
S2
S3
S4
What needs to be done to this circuit so that the lamp lights up?
Close the switch
Add a source and close the switch
Add another lamp
Add another lamp and a switch
1. Which switch or switches must be closed to make the lamps light?
Only switch 1
Only switch 1
Switches 1 and 2
Switches 1 , 2 and 3
Tammy makes a complete simple circuit with one bulb and three batteries. The bulb lights for an instant and then goes out. Why?
Too much electricity flows through the bulb's filament
Not enough electricity flows around the circuit
The batteries are flat
The batteries are not good
Peter has connected two bulbs across two batteries in a simple circuit. How can she make the bulbs dimmer?
Replace one of the batteries with a section of wire
Replace one of the bulbs with a section of wire
Replace one of the batteries with a cork
Replace the batteries for more wire
If lamp 1 is unscrewed from its holder, what will happen to lamp 2?
It will get brighter
It will stay the same brightness
It will go out
Nothing will happen
Why is a bulb brighter when it is powered by two batteries rather than one?
Because the flow of electricity in the circuit is less
Because the flow of electricity in the circuit is the same
Because the flow of electricity in the circuit is greater
Because the flow of electricity will go backward
If lamp 2 is unscrewed from its holder, what will happen to lamp1?
It will stay lit
It will go out
It will get dimmer
It will dissapear
In the circuit shown, what would happen to light bulb #1 if light bulb #2 fused (damaged)?
Light bulb #1 would remain lighted.
Light bulb #1 would fuse too..
Light bulb #1 would explode.
Light bulb #1 would shut off the power source.
A parallel circuit has more than one path for electricity to flow
true
false
Which one is not the source of the power plants?
waves
winds
hydroelectric
dynamo
What is the source of electrical energy above?
dynamo
dry cell
accumulator
generator
Dry cells store _______________ .
kinetic energy
chemical energy
light energy
heat energy
Accumulator converts _______________ into electrical energy
chemical energy
heat energy
light energy
kinetic energy
What is the manipulated variable?
The number of bulbs
The number of dry cells
The conditions of switch
The length of the wire
Arrange the brightness of the bulbs in ascending order?
ACB
BCA
CBA
ABC
What is the possible effect on the pupil?
electric shocked
nothing happens
healthier
become blind
What should be done to avoid accidents due to mishandling of electrical appliances?
Hands must be wet when touching a switch
Inserting an object that conducts electric currents into the socket
Connecting too many plugs in a socket
Turn off the main switch while repairing electrical appliances
What is not the safety measure that can be taken before using an iron?
Make sure the iron plus is installed properly
Make sure the hands dry
Make sure wears attire made by iron
Make sure wire of an iron in good conditions
What happens to the bulb if switch 2 is opened?
Only bulb M2 light up
Only bulb M1 and M2 light up
All bulbs light up
All bulbs did not light up
What happens to the bulb if switch 3 is opened?
Only bulb M4 did not light up
Only bulb M3 did not light up
Only bulb M1 did not light up
Only bulb M4 did not light up
All switches are closed and L1 and L2 light up. Which switch should be opened so that both L1 and L2 will not light up?
S1
S2
S3
S4
The diagrams below show 4 electrical circuits. The battery and bulb used in each circuit are identical and in working condition. In which one of the circuits will the bulb light up?
Option 1
Option 2
Option 3
Option 4
Why do electricians always wrap wires in plastic?
Plastic comes in many different colors
Plastic is a good electrical conductor
Plastic makes the wires easy to bend
Plastic is a good electrical insulator
