Ohm's law describes the relationship between the voltage (V), current (I), and resistance (R) in a circuit. It states that the product of voltage and current is...
Ohm's law describes the relationship between the voltage (V), current (I), and resistance (R) in a circuit. It states that the product of voltage and current is equal to the resistance. In other words:
V × I = R
This law provides a mathematical relationship between these variables, helping determine the behavior of a circuit under different conditions.
Examples:
12 V × 2 A = 24 V
220 V × 10 A = 2200 W
R = V/I = 5 ohms ÷ 1.5 A = 3 Ω
Key points:
The law applies to both direct and reverse current flow.
It is a fundamental principle in understanding how electrical circuits function.
Variations in voltage or current will result in changes in resistance, leading to different current values