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WorksheetsElectric Circuits Revision
Total questions: 16
Worksheet time: 12mins
Name some Conductors
Mercury
Wood
Ansh
Rubber
What is a switch?
It is a path through which electrons flow
It stores electrical energy
It makes and breaks an electric circuit
It is a conductor
If we put a paper pin between two wires that are connected to a bulb and a battery, will the bulb glow?
Yes
No
Don't know
Which of the following energy conversion takes place in a torch?
Electrical to Light
Electrical to Chemical to Light
Chemical to Electrical to Light
Chemical to Electrical to Heat to Light
Is air a conductor or an insulator
Conductor
Insulator
Both of them
None of them
How many terminals are in a cell?
0
2
1
Observe the following table and match the following. Select the correct option.
a - iv, b - iii, c- ii, d - i
a - iii, b- iv, c - i, d- ii
a- ii, b - iii, c- iv, d- i
What is the filament of the light bulb normally made out of?
Stainless Steel
Tungsten
Brass
Iron
What gas is used in a bulb
Oxygen
Carbon Dioxide
Argon
Nitrogen
What prevents the bulb from bursting?
Inert Gas
Filament
Contact Wires
Support Wires
1] The direction of flow of current in the wire
2] The direction of flow of electrons in a wire
1. negative to positive
2. positive to negative
1. positive to negative
2. negative to positive
1. negative to positive
2. negative to positive
1. positive to negative
2. positive to negative
What is a reflector in a torch?
It gathers the light emitted by the source and focus it out thus creating a strong beam of light.
It stores energy
Repels light
It prevents the loss of inert gas
An electric bulb is connected to a cell through a switch as shown in the figure below. When the switch is brought to the 'ON' position the bulb does not glow. What could be the possible reason/s for it?
The bulb is fused
The pin is disrupting the flow of electricity
The wiring is wrong
The battery cannot produce any electrical energy
