1.

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.

Answer»

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.



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