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

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

i think the correct answer from the choices listed above is option c. when the kinetic energy of particles in a liquid state decreases

explanation: