Three identical resistors, when connected in series, transform electrical energy into thermal energy at a rate of 12 W (4.0 W per resistor). Part A Determine the power consumed by the resistors when connected in parallel to the same potential difference. Express your answer with the appropriate units.

Explanation:

Potential difference, V and let each resistance, R

Resistors are in series, total resistance, Rₓ = R1 + R2 + R3

= R + R + R

= 3R

Power, P = V²/Rₓ

12 = V²/3R

V²/R = 36

Resistors are in parallel, total resistance, 1/Rₓ = 1/R1 + 1/R2 + 1/R3

Rₓ = R/3

P = V²/Rₓ

P = V²/(R/3)

P = 3(V²/R)

= 3(36)

= 108 W.

= initial pressure

= final pressure = 2

= initial volume

= final volume = /4

= initial temperature = 20 c = 20 + 273 = 293 k

= final temperature = ?

using the equation