Question

Two resistors each of resistance 2 ohm can be connected separately in series and in parallel as shown in the figure. Calculate the power consumed across the w ohm resistor in each case. also find the ratio of the power consumed​

Answer 1

ln the (ii)case the series combination we will find the power by the formula

p=v×i

firstly we will find the I(current)

$i = \frac{v}{r}$

$i = \frac{12}{4ohm} = 3 \: amphere$

$p = v \times i \\ p = 12 \times 2 \: ohm = 24w$

This is the power consumed by first resistor.

now for the 2nd resistor

$p = v \times i \\ p = 12 \times 2 \: ohm = 24w$

Now the parallel combination iii case

$p = {i}^{2}r$

$i = \frac{v}{r } = \frac{12}{1} = 12amphere$

$p = {12}^{2} \times 1 = 144w$

ratio of both the power is

48:144=1:3

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Answer 2

Answer:

Hi/ho is Ur correct answer

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