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3 years ago

8

Tho resistors or resistance 2 ohms 4 ohms are connected in Series and then in Parallel what is the ratio of their respective res

istance.

1 answer:

LUCKY_DIMON [66]3 years ago

6 0

Answer:

9:2

Explanation:

Series connection

Rt = R1 + R2 = 2 + 4 = 6 ohms

Parallel connection

1/Rt = 1/R1 + 1/R2 = 1/2 + 1/4 = (2+1)/4 = 3/4

1/Rt = 3/4

===> Rt = 4/3 = 1.33 ohms

ratio of series to parallel

6÷4/3 = 6×3/4 = 9:2

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$\therefore \dfrac{P_1V_1}{T_1}=\dfrac{P_2V_2}{T_2}\\\Rightarrow P_2 = \dfrac{V_1}{V_2}\times \dfrac{T_2}{T_1}\times P_1\\\Rightarrow P_2 = \dfrac{V_1}{0.3V_1}\times \dfrac{319}{283}\times 1.01325\times 10^5\\\Rightarrow P_2 =3.81\times 10^5\ Pa$

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