Three resistors are connected in series, R1 = 3 ohms, R2 = 6 ohms, and R3 = 9 ohms. Resistor A is connected parallel to R1 and R2, where RA = 30 ohms. Resistor B is also connected in parallel to R2 and R3 where RB = 45 ohms. An emf voltage (E1 = 25V) is connected to R1 and another emf voltage (E2 = 15V) is attached to R3. Note: Round off answers to 3 decimal places for I2, I3, IA and IB and 1 decimal place for I1. Determine the following: a) What is the current flowing in R1 (I1). Answer in 1 decimal place. b) Find the current flowing in R2 (I2) Answer in 3 decimal places. c) Current in R3 (I3). Answer in 3 decimal places. d) Current in RA (IA) Answer in 3 decimal places. e) Current in RB (IB) Answer in 3 decimal places.

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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.