Consider the circuit shown in the figure. R1 R5 R7 1kQ 1kO 1kQ V1 R2 4.7kO R3 A6 4.7kO R6 24.7kO V2 5V 1. Find the voltage across R7 2. Find Thevenin's voltage and Thevenin's resistance assuming R7 as the load

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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.