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Worksheetsheating effect of electric current
Total questions: 16
Worksheet time: 8mins
filament of a bulb is usually made up of
nickel
chromium
cobalt
tungsten
filament of a bulb should have
high melting point
low melting point
element of an electric iron is made up of
nickel
chromium
nichrome
tungsten
Lets start with an easy one . A combination of 2 or more cells is known as
an electric cell
a battery
a switch
a bulb
When current is switched 'on' of a bulb it converts _______ energy into _______ energy.
Electrical, heat
Electrical, light
Electrical, mechanical
Electrical, sound
1.An electric current can produce
heating effect only.
chemical effect only.
magnetic effect only.
chemical, heating, and magnetic effects.
Which is this type of circuit?
Open circuit
Closed circuit
Both of these
None of these
Fuse works based on the
heating effect of electric current
magnetic effect of electric current
Lighting effect of electric current
heating effect of electric current is used in
checking temperature
pan
room heaters
none of the above
Connection of more than one device/ appliance to a single socket is called-
Overloading
Short circuit
Both
The heating effect of an electric current is used in
Hair dryer
A fan
A computer
Who discovered chemical effect of elecric current?
Thomas Edison
Joule-Lenz
Michael Faraday
James Watt
Who discovered heating effect of elecric current?
James Watt
Joule-Lenz
Michael Faraday
Thomas Edison
When an electric current pass through by the conductors, the conductor ___________ ______
to begin crash
going to freeze
heats up
going to melt
A fuse wire is a wire of-
High resistivity and low melting point
High resistivity and high melting point
Low resistivity and low melting point
Low resistivity and high melting point
Which one of the following is the most energy efficient
LED
Incandescent bulb
CFL
