1. Tardigrade
  2. Question
  3. Physics
  4. In a large building, there are 12 bulbs of 40 W, 4 bulbs of 100 W , 7 fans of 60 W and 1 heater of 1 kW. The voltage of the electric mains is 230 V. The minimum capacity of the main fuse of the building will be A.

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. In a large building, there are $12$ bulbs of $40 \,W$, $4$ bulbs of $100\, W , 7$ fans of $60 \,W$ and $1$ heater of $1\, kW$. The voltage of the electric mains is $230 \,V$. The minimum capacity of the main fuse of the building will be _____ $A$.

Current Electricity

Solution:

$P_{\text {total }}=V \times I$
$12 \times 40+4 \times 100+7 \times 60+1 \times 1000=V \times I$
$480+400+420+1000=230 I$
$\therefore I=\frac{2300}{230}$
$=10 \,A$