In a house, one 100 W bulb, one 20 W tube light, one 80 W television and one 2000 W heater operate at 220 V supply. The current passing through the main fuse used for these appliances will be:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 10 A
Household appliances are connected in parallel across the supply, so their powers add and the main fuse carries the total current.
\( \displaystyle P = 100\,\mathrm{W} + 20\,\mathrm{W} + 80\,\mathrm{W} + 2000\,\mathrm{W} = 2200\,\mathrm{W} \)
\( \displaystyle I = \frac{P}{V} = \frac{2200\,\mathrm{W}}{220\,\mathrm{V}} \)
\( \displaystyle I = 10\,\mathrm{A} \)