plumjon
May 20, 2009, 10:18 AM
Can you tell me the difference between a conductive load and a resistive load. Also the relationship between voltage current an amps within the two loads
KISS
May 20, 2009, 11:09 AM
I think you mean inductive. Conductance in Siemens is 1/R.
If the voltage and cuurent are sinusoidal, the following relationship applies:
P = V*I*cos(theta)
Where theta is the phase ange between voltage and current.
For a resistive load cos(theta)) is 1.
Cos(theta) is known as the power factor.
For non-sinusoidal loads, it's a new ball game.
Instantaneous power is V(t)*I(t). If it's periodic power, the relationship for power is the integral of v(t)*i(t) dt from o to t. I think it's divided by 2. Look in a Calculus book for average value of a function.
Odd things can happen because v can be positive and I negative etc.