WorksheetsElectricity and Circuits
Total questions: 20
Worksheet time: 19mins
____ is the positive terminal of an electrical cell.
Metal disc
Metal case
Metal cap
Metal base
The tiny coiled metal wire present inside the bulb is called ___
Element
Conductor
Filament
None of these
A combination of two or more electric cells is called _____
Electric circuit
Battery
Terminals
None of these
An electric bulb has ____ terminals.
3
4
1
2
_____ is an electric device which easily closes or opens an electric circuit.
Filament
Electric bulb
Electric switch
Electric cell
A material which does not allow the electricity to pass through it is _____
Conductor
Electric cell
Insulator
None of these
Electric energy is produced from the ______ within the cell.
Chemicals
Metals
Terminals
None of these
The electric current in a closed circuit always flows from the ____ terminal of the electric cell to the _____ terminal.
Negative to positive
Positive to negative
Positive to positive
None of these
Why do electricians wear gloves made of rubber?
It is soft.
It is waterproof.
It is an insulator.
It is inexpensive.
Why is it unsafe to switch on a bulb with wet hands?
The switch blows off.
It can give a shock.
The bulb gets fused.
The wires are disconnected.
Which among the following metal is used for making electric wires?
Graphite
Iron
Copper
Zinc
Why is tungsten used as a filament in electric bulbs?
It is non luminous
It is a soft metal
It has a high melting point
It has a low melting point
The bulb in a circuit glows when electric current
flows through the glass covering
flows through its filament
stops flowing to the bulb
flows into the air through the bulb
Cell is a device which-
Converts chemical energy into electrical energy.
Electrical energy into light energy
Electrical energy into magnetic energy
None of these
