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. The load of the circuit always offers some resistance to the flow of electrons. The load resistance in a circuit is the effective resistance of all of the circuit elements excluding the emf source. 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. If our load resistance is somewhere 0 < R L < ∞, then there’ll be some nonzero power P(RL) > 0. 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. Testing Resistance. No power is delivered if the load is an open circuit. Checking a circuit’s resistance over a voltage drop test can be risky for an amateur. The load is the part of the circuit that uses the power. 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 … Simple circuit showing voltage and resistance . In this circuit, a 12V DC source is connected across a 2Ω load, calculate the power consumption of the circuit? Generally, the load is the something that is connected to the output of an electrical circuit. Difference between load resistance and Thevenin/Norton resistance? 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: = +. Load is intermediate. 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. So Load resistor is a resistor that is connected at the output stage of a circuit to draw current from the circuit. You need the resistance of the load of an electric circuit in order for the circuit to function, but if you have unwanted resistance, the circuit will not function as intended. This is called an open circuit. 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. The switch is an electric circuit is used to prevent the flow of electrons. The tap in the analogy of the water system corresponds to changing he resistance of the resistor. The current flow in the circuitry will be. 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