Question

An electric bulb is rated 220 volt and have 110 watt when it is operated at 110 volt the power consumed will be

Answer 1

Answer:

110 watt

Explanation:

110 watt is the power consumed

Answer 2

$\bf{\underline{\underline{Given,}}}$

$\bf{V\:=\:220V}$

$\bf{P\:=\:100W}$

$\bf{Resitance\:of\:bulb\:,}$

$\bf{\boxed{R\:=\:\frac{\:V^{2}}{P}}}$

$\bf{R\:=\:\frac{220 \times 2\cancel0\cancel0}{1\cancel0\cancel0}\:=\:484 \:Ohm}$

$\bf{Now\:,\:when\:,V\:=\:110V}$

$\bf{Then\:power\:consumed,}$

$\bf{\boxed{P\:=\:\frac{\:V^{2}}{R}}}$

$\bf{P\:=\:\frac{\cancel1\cancel1\cancel0 \times \cancel1\cancel1\cancel0}{\cancel4\cancel8\cancel4}\:=\:25W}$

$\bf{\underline{\underline{Thanks}}}$