Difference between load resistance and Thevenin/Norton resistance? In this circuit, a 12V DC source is connected across a 2Ω load, calculate the power consumption of the circuit? The power P L dissipated in the load is the square of the current multiplied by the resistance: If our load resistance is somewhere 0 < R L < ∞, then there’ll be some nonzero power P(RL) > 0. From equation [1] and [2], it is proved that the current flow and through the load resistance remains same in the original circuit and the Norton’s equivalent circuit. We can use calculus to find the maximum by solving for the value of R L that makes the derivative d P (R L) d … As a result energy is convert into heat, light or mechanical energy. Load is intermediate. Testing Resistance. 1. So Load resistor is a resistor that is connected at the output stage of a circuit to draw current from the circuit. I = V / R I = 12 / 2 = 6 Amperes Simple circuit showing voltage and resistance . In Electronics Load is referred to device or component which draws current from a circuit and connected to its output. In a simple circuit comprising of a battery or voltage source and a resistor, then assuming the connecting wires have no resistance, then the higher the resistance the less the current that will flow. Generally, a variable load resistor is used to test the effect of Load resistance on the power consumed by the circuit and several other parameters. The load of the circuit always offers some resistance to the flow of electrons. This is called an open circuit. The switch is an electric circuit is used to prevent the flow of electrons. No power is delivered if the load is an open circuit. ii) Capacitive load: The load in the circuit which is capacitive in nature can be termed as capacitive load. In the diagram opposite, power is being transferred from the source, with voltage V and fixed source resistance R S, to a load with resistance R L, resulting in a current I.By Ohm's law, I is simply the source voltage divided by the total circuit resistance: = +. The tap in the analogy of the water system corresponds to changing he resistance of the resistor. It can be anything like a … A simple DC circuit is shown in the figure below which contains a DC source (battery), a load lamp, a switch, connecting leads, and measuring instruments like ammeter and voltmeter.The load resistor is connected in series, parallel or series-parallel combination as per requirement. The term Load resistor is often comes into practice in mathematical modelling of a circuit. A load resistance is simply a resistor which is being used as a load for an electrical network. In this circuit, the total resistance is load resistance so the R = 2 and the input voltage supply is 12V DC so the V = 12V. 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