State the energy changes in the following case while in use
(i) An electric iron.
Energy changes in an electric iron:
State the energy changes in the following cases while in use:
(a) loudspeaker
(b) a steam engine
(c) microphone
(d) washing machine
(e) a glowing electric bulb
(f) burning coal
(g) a solar cell
(h) bio-gas burner
(i) an electric cell in a circuit
(j) a petrol engine of a running car
(k) an electric toaster
(l) a photovoltaic cell
(m) an electromagnet.
In an electric cell while in use, the change in energy is from:
(a) electrical to mechanical
(b) electrical to chemical
(c) chemical to mechanical
(d) chemical to electrical
state the energy changes in the following cases while in use
(1) washing machine
(2) an electric cell in a circuit
((3)a photovoltaic cell