The source of electricity in a torch is ______________.
To power a torch we generally use cells.
Hence, the source of electricity in a torch is cells.
Which effect of electric current is utilised for detecting the flow of current through a solution : (a) when a torch bulb is used ? (b) when a compass is used ?
Name the energy transfer which occurs when :
(a) an electric bell rings
(b) someone speaks into a microphone
(c) there is a picture on a television screen
(d) a torch is on
In a torch the source of electricity is
In a torch, we use ___ as a source of electricity.