WorksheetsElectric currents and it's effects quiz
Total questions: 20
Worksheet time: 10mins
The positive terminal of one cell is connected to the negative terminal of the next cell. such a combination is called (a)
_______________ is a safety device which works on heating effect of electric current.
Battery
Fuse
Bulb
'+' is the ________ sign whereas '-' is the _________ sign.
negative, positive
positive, negative
When positive and negative wires at home directly comes in contact, a large current flows through the wire. The is called short circuit..
True
False
what is this symbol of?
Electric cell
Electric bulb
switch 'on' position
wire
the symbol of switch 'off' position
In the bulb there is a thin wire, called the (a) which glows when an electric current passes through it.
When the bulb gets fused, its filament is broken.
True
False
Give one example for heating effect of the electric current.
The wire gets hot when an electric current passes through it
The bulb gets cold when an electric current passes through it
This coil of wire is called an (a)
___________ electric bulbs are often used for lighting.
candescent
Incandescent
Wires made from some special materials melt quickly and break when large electric currents are passed through them. These wires are used for making _______________________
electric fuses
short circuit
fuses
what is this?
Socket
Miniature Circuit Breaker
_________________ was the first person who noticed the deflection of compass needle every time the current was passed through the wire.
Stephen Hawking
Albert Einstein
Thomas Alva Edison
Hans Christian Oersted
A current carrying coil of an insulated wire wrapped around a piece of iron is called an (a)
Electro magnets are used in some devices
True
False
What is the diagram of?
Electric bell
Electromagnet
For question 18, 19, 20 find the name of the appropriate symbol.
Battery
Bulb
Wire
the symbol is _________
Bulb
Wire
Battery
The symbol is ______
battery
Wire
Electric bulb
