Problem 3 Vs 10 V I₁ R₁ 8 Ω ww +21 V2 12 R₂ 3Ω + V3 www R3 6Ω Figure P3 By using only network theorems and their properties, and also voltage and current divider formulas, solve the circuit in Figure P3 following the steps below: a) Obtain the equivalent resistance Reqt of the resistor network in the circuit. b) Based on Reql determine the current I1 of resistor R1. c) What is the direction and magnitude of current in the voltage source? Why? d) What type of a network is the resistor network formed by R2 and R3? Obtain their equivalent resistance Req2. What are voltages v2 and v3 using the voltage divider formula? e) f) Current I₂ can be obtained by dividing current I₁ between currents in R2 and R3 using the current divider formula.

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KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.