I

#### ITSME.ULTIMATE

- Jan 1, 1970

- 0

power=

(V^2)/R

I^2 * R

V * I

But what if you have a one ohm resistor?

Example, one ohm resistor with 0.25A going through.

V=I*R, so V= 0.25 x 1 = 0.25A

using the formula, power = V*I, you get 0.25W

but using the other formula (V^2)/R, you get 0.0625W

0.0625 != 0.25W

Let's try 4 ohm resistor with 0.5A flowing through:

V=I*R, V= 0.5 x 4 = 2V

P= V*I = 2 x 0.5 = 1W

P=(V^2)/R = (2^2)/4 =1W

P= (I^2) * R = (0.5 x 0.5) * 4 =1W

Why isn't it working and what did I not do right?