Which of these are used to produce an electric current?
Running water
Steam
Wind
All of these
Filament of s bulb is made up of
aluminium
chromium
platinum
tungesten
A substance which allows electricity to pass through it is called
a conductor
an insulator
semiconductor
superconductor
Which is an example of an insulator?
bakelite
tap water
all of these
Bulb glows only in
closed circuit
open circuit
in both circuits
open circuit if bulb is not fused
A bulb has
two terminals and a filament
two terminals and two filaments
multiple terminals and single filament
single terminal and a filament
Which of these is a set of good electrical insulators?
Graphite, wood, rubber
Rubber, glass. wood
Pure water, wood, silver
Copper, iron, silver
Which of the following statement is correct for switch?
It controls flow of electricity
It controls brightness of a bulb
It controls power of the batteries
It fuses a bulb
Which of these will generate electric current when kept in sunlight but not when kept in the dark?
Dry cell
Car battery
Button cell
Solar cell
The device that makes contact between two terminals is called
Filament
Circuit
Switch
Cell
