A house is served by a 220 , V supply line in | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The power supplied by the circuit is given by $P = V 	imes I$. Given,$V = 220 \, V$ and $I = 9 \, A$. Total power $P = 220 	imes 9 = 1980 \, W$.

Vedclass · Accepted Answer

$33$

Vedclass · Answer

(D) The power supplied by the circuit is given by $P = V 	imes I$. Given,$V = 220 \, V$ and $I = 9 \, A$. Total power $P = 220 	imes 9 = 1980 \, W$. Let $n$ be the number of $60 \, W$ lamps connected in parallel. The total power consumed by $n$ lamps is $n 	imes 60 \, W$. For the fuse not to blow,the total power consumed must be less than or equal to the supply power: $n 	imes 60 \leq 1980$. $n \leq \frac{1980}{60} = 33$. Therefore,the maximum number of lamps that can be turned on is $33$.

$A$ house is served by a $220 \, V$ supply line in a circuit protected by a $9 \, A$ fuse. What is the maximum number of $60 \, W$ lamps in parallel that can be turned on simultaneously?

Similar Questions

Two electric bulbs have resistances in the ratio $1 : 2$. If they are connected in parallel to a constant voltage source,the ratio of power dissipated in them will be:

$A$ $10\, \Omega$ electric heater operates on a $110\, V$ line. Calculate the rate at which it develops heat in $watts$.

$4$ bulbs marked $40\, W, 250\, V$ are connected in series with a $250\, V$ mains. The total power consumed is ............. $W$.

How much electric energy is consumed by an average Indian household in one second?

Assertion: Long distance power transmission is done at high voltage.
Reason: At high voltage supply,power losses are less.

Vedclass Test Series

Exam Paper Generator

Online Exam Module