Exam Question
Derive the formula for Total resistance of a circuit containing 3 resistors in (16)
(a) Series and
(b) parallel
Class 4 (4th Engineer)
MET
📅 Jun 2023
Reference Answer
### Introduction
To derive the formulas for the total resistance of a circuit, we must apply two fundamental principles of electrical circuits:
1. **Ohm's Law**: This law states that the voltage (V) across a resistor is directly proportional to the current (I) flowing through it, provided the temperature and other physical conditions remain unchanged. The constant of proportionality is the resistance (R).
$$ V = I \times R $$
To derive the formulas for the total resistance of a circuit, we must apply two fundamental principles of electrical circuits:
1. **Ohm's Law**: This law states that the voltage (V) across a resistor is directly proportional to the current (I) flowing through it, provided the temperature and other physical conditions remain unchanged. The constant of proportionality is the resistance (R).
$$ V = I \times R $$
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