Question

What is Ohm's Law?

Answer 1

Ohm's Law is a basic principle in electrical engineering that explains how voltage, current, and resistance are related in an electrical circuit. It states that:

V = I × R

Where:

1. V is the voltage (in volts, V)
   

1. I is the current (in amperes, A)
   

1. R is the resistance (in ohms, Ω)
   

In simple terms, Ohm's Law says that the voltage (V) across a resistor in a circuit is equal to the current (I) flowing through it, multiplied by the resistance (R) of the resistor.

Key Points:

1. Voltage (V) is the "push" that makes the electric charge move.
   

1. Current (I) is the flow of electric charge.
   

1. Resistance (R) is the property of a material that resists or opposes the flow of current.
   

Example:

If you have a 10-ohm resistor, and the current flowing through it is 2 amperes, you can find the voltage using Ohm's Law:

V = I × R  
V = 2 A × 10 Ω = 20 V

So, the voltage across the resistor would be 20 volts.

It's a simple but powerful rule to understand how electrical circuits behave!