Same chapter1 markDifficulty: Medium
The colour of the earth wire in the modern convention is:
Household Circuits
3 marksDifficulty: Medium
A house has five 60 W lamps and one 1000 W heater, all working together on a 220 V supply. Calculate the total current drawn and state a suitable fuse rating.
Original Khojo Papers practice question — not from a past board paper.
Answer
About 5.9 A, so a 10 A fuse is suitable.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The total power is 5 × 60 + 1000 = 1300 W, so the current is 1300 ÷ 220 ≈ 5.9 A. A fuse is chosen with a rating a little above the working current, so 10 A is appropriate.
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