TLO 1: Calculate unknown voltages and resistances in a series circuit using Kirchhoff's and Ohm's Laws. 1. Use resistors R1 through R4, the milliammeter and the dc power source, and connect the series circuit shown in Fig. 4-1. Do not apply power this time! 2. Calculate the total resistance, R, of the circuit. R, Ω 3. Use Ohm's Law and a voltage source of 25Vdc, and calculate the current flow in the circuit. mAdc Your calculated value should be five mAdc. 4. Calculate the voltage drop across each resistor. ERI ER ERS ER Vdc Vdc Vdc Vdc CamScanner

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Nodal Analysis

In the analysis of any electric circuit, nodal analysis is the method of determining the potential difference or voltage between different nodes in an electric circuit. A node is a point where two or more branches connect each other. In the nodal analysis, the voltages are determined in the terms of branch currents. The nodal analysis is also known as the node voltage method or branch current method. The nodal analysis method is one of the several applications of Kirchhoff's Current Law (KCL).