Question

what will be the current down by an electric bulb of 40w when it is connected to a sorce of 220v​

Answer 1

$\large{\underline{\boxed{ Answer}}}$

Voltage = 220 v

Power of bulb = 40 w

Now,we use here the relationship between the power,current and voltage.

$\boxed{\sf{ </strong><strong>P</strong><strong> </strong><strong>=</strong><strong> </strong><strong>V</strong><strong> </strong><strong>×</strong><strong> </strong><strong>I</strong><strong>}}$

$= > 40 = 220 \times i$

$= > i = \frac{40}{220}$

$= > i = 0.18ampre$

hence, the current drawn by electric bulb is 0.18 A