Physics, asked by abhiansh59, 1 year ago

The resistance of two lamps is in the ratio 4:5. What will be the ratio of their wattage?

Answers

Answered by ArghaModak
7

P=VI=V^2/R.so the answer is 5 : 4

Answered by handgunmaine
10

Given that,

Ratio of resistance of two lamps is 4:5.

To find,

The ratio of their powers.

Solution,

The relation between power and resistance of electrical equipment is given by :

P=\dfrac{V^2}{R}

So,

\dfrac{P_1}{P_2}=\dfrac{R_2}{R_1}

We have, \dfrac{R_1}{R_2}=\dfrac{4}{5}

It means,

\dfrac{P_1}{P_2}=\dfrac{5}{4}

So, the ratio of powers of two lamps is 5:4.

Learn more,

Electric power

https://brainly.in/question/14979077

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