Question 334: Current Electricity

Question

In a large building, three are $$15$$ bulbs of $$40$$ $$W$$, $$5$$ bulbs of $$100$$ $$W$$, $$5$$ fans of $$80$$ $$W$$ and $$1$$ heater of $$1$$ $$kW.$$ The voltage of electric mains is $$220$$ $$V.$$ The minimum capacity of the main fuse of the building will be:

Accepted Answer

Total power consumed by electrical appliances in the building, $${P_{total}} = 2500W$$
Watt $$=$$ Volt $$ 	imes $$ ampere
$$ \Rightarrow 2500 = V 	imes {m I}$$
$$ \Rightarrow 2500 = 220$$ $${m I}$$
$$ \Rightarrow I = {{2500} \over {220}} = 11.36 \approx 12A$$
(Minimum capacity of main fuse)

Answer

$$8$$ $$A$$

Answer

$$10$$ $$A$$

Answer

$$12$$ $$A$$

Answer

$$14$$ $$A$$

Current Electricity

In a large building, three are $15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW. The voltage of electric mains is 220 V.$ The minimum capacity of the main fuse of the building will be:

Choose the correct answer: