Question

$class \: 10 \\ physics$
Two exactly similar electric lamps are arranged (I) parallel, and in (II) series. If the parallel and series combination are connected to a 220 V supply line, what will be the ratio of electrical power consumed by them?​

Answer 1

Good Question.

Thank You for asking this question.

If the resistances are equal, say
R1 = R2 = R
then ,

Ratio = ${\huge{\frac{1}{R1 * R2}}}$

Then , Ratio = ${\huge{\frac{1}{R * R}}}$

Ratio = ${\huge{\frac{1}{R^2}}}$