The purpose of the second circuits lab was to investigate voltage, current and resistance of a circuit in series, a circuit in parallel and a circuit that cannot be classified as either. Once again voltage (V) is the electric potential difference measured in volts. Resistance (R) is how much the electric force is reduced measured in Ohms. And current (i) is the flow of electrons measured in Amperes. In the circuit in series, the current is constant throughout since there is only one past for the electrons to flow. In the circuit in parallel, the voltage drop is constant throughout due to the nodes. The nodes are two wires that connect the circuit components without changing anything, since the first node on a parallel circuit connects to the 5.0 V power supply and the other connects to ground the voltage drop throughout is 5.0V. The third circuit in this lab was neither in series or parallel but a combination which meant no assumptions were able to be made on anything that would be constant. Methods…show more content… New resistor values were used and calculated based off the color band digit codes seen in section 1 of the appendix. To calculate the voltage drop through the circuit the 5.0 V since the single power supply is connected to ground. Each resistor was individually measured using a multimeter without the resistor being connected to a power supply. Since the current must travel through both resistors, the resistance of either Resistor 1 or Resistor 2 while in series will just be the two values added together as in Equation 1. Knowing the sum of the resistors and the voltage drop, the current can be calculated using Ohm’s Law as seen in Equation
