Guide
1
Identify all sources of power circuit.Power Output voltage sources Pu = EI, where E - the current value of the EMF source, and I - a value of current flowing through this source.
2
Find the algebraic sum of the powers given to the sources.If the actual (positive) direction of current flow through the source coincides with the EMF, the power source of the positive.If the direction of current flow through the source is opposite to the EMF, the power source of the negative.To find t
he algebraic sum of the power output was positive and subtract the amount received from all of the negative power source.
3
Determine power resistive resistance.Power in the resistive resistance Rn = (I ^ 2) * R, where I - current in the resistor, R - the resistance.Power resistor is always positive because the power expended in heating, regardless of the current direction.
4
Find the arithmetic sum of the power dissipated in the resistive circuit resistance.To find this amount, add up the values ​​found power consumed across each resistor.
5
compare the amount of power supplied to the power source to the amount consumed by the resistance.If the circuitry is designed properly, both the values ​​of the amounts to be equal to each other.Achieved balance condition.This equation - the equation of power balance for a given electrical circuit.