(i) Why does a glowing electric bulb become warm? |
(ii) Mention any two effects of electric current. |
(iii) Why does a glowing CFL not become warm? |
Answer:
(i) Part of electricity supplied produces heating effect. (ii) Electricity produces two effects: (a) Heating effect. (b) Magnetic effect (iii) The electricity supplied is mostly used to produce light and heating effect is minimum
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