Question

A house having a $220V$ line has these appliances operating
(a) a $40W$ bulb
(b) a $2000W$ heater and
(c) a $40W$ radio.
The net current drawn is

• A. $\frac{104}{11}A$
• B. $\frac{24}{11}A$
• C. $\frac{2}{11}A$
• D. $11A$

Answer 1

The correct option is A $\frac{104}{11}A$

In a house, the connections are in parallel.



current drawn by heater,
$i_1=\frac{2000}{220}=\frac{100}{11}A$
current drawn by bulb,
$i_2=\frac{40}{220}=\frac{2}{11}A$
Current drawn by radio, $i_3=\frac{40}{220}=\frac{2}{11}A$
Total current, $i=i_1+i_2+i_3=\frac{100+2+2}{11}=\frac{104}{11}A$