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⚡ What Is Ohm’s Law?

Ohm’s Law describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit:

V = I × R

• Voltage (V): The electrical pressure or force that pushes electrons through a conductor (measured in volts).
• Current (I): The flow of electric charge (measured in amperes or amps).
• Resistance (R): The opposition to current flow (measured in ohms, symbol: Ω).

🧪 Simple Analogy: Water in a Pipe

Imagine electricity like water flowing through a pipe:

• Voltage is the water pressure.
• Current is how fast the water flows.
• Resistance is how narrow or clogged the pipe is.

More pressure (voltage) = more flow (current), unless the pipe is narrow (high resistance).

🧮 Rearranging the Formula

You can solve for any of the three:

• I = V ÷ R
• R = V ÷ I

🔍 Real-Life Example

Say you have a 9V battery and a resistor of 3Ω:

• I = V ÷ R = 9 ÷ 3 = 3A So, 3 amps of current will flow through the

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📊 Ohm’s Law Charts

1. Ohm’s Law Pie Chart

A circular chart showing all 12 formulas derived from Ohm’s Law and the power equation.

• Great for quick reference.
• Includes formulas like P = V \times I, R = V / I, etc.

2. Ohm’s Law Triangle

A classic visual aid: