Question

What is Ohm's law class 12?

Answer 1

Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. It states that:

**V = I × R**

Where:
- **V** is the voltage (in volts, V),
- **I** is the current (in amperes, A),
- **R** is the resistance (in ohms, Ω).

In simple terms:
- **Voltage (V)** is the electrical pressure that pushes the current through the circuit.
- **Current (I)** is the flow of electric charge.
- **Resistance (R)** is the opposition to the flow of current.

Ohm’s Law tells us that the current flowing through a conductor (like a wire) is directly proportional to the voltage across it and inversely proportional to its resistance.

- If you increase the voltage, the current increases.
- If you increase the resistance, the current decreases.

For example, in a simple circuit with a resistor, if you know the voltage applied and the resistance, you can calculate the current flowing using Ohm's Law.

**Example:**
If a resistor has a resistance of 5 Ω, and a voltage of 10 V is applied across it, the current flowing through the resistor would be:

**I = V / R = 10V / 5Ω = 2A**

This means 2 amperes of current would flow through the resistor.