Ohm's Law is a helpful formula that connects voltage, current, and resistance in electrical circuits. Think of it as a secret code that explains how electricity works in our daily lives! Are you excited to learn? Let’s get started!

What is Ohm's Law?

Ohm's Law tells us:

$$V = I \times R$$

Here’s what it means:

• Voltage ($V$) is measured in volts (V).
• Current ($I$) is measured in amperes (A).
• Resistance ($R$) is measured in ohms (Ω).

This simple formula helps you find any of these three things if you know the other two.

Let's Break It Down:

1. Finding Voltage ($V$):

   If you know the current and the resistance, you can find the voltage using this formula:

   $$V = I \times R$$

   Example:

   If the current is 2 A and the resistance is 5 Ω:

   $$V = 2 \, \text{A} \times 5 \, \text{Ω} = 10 \, \text{V}$$

   So, the voltage is 10 volts!

2. Finding Current ($I$):

   If you know the voltage and the resistance, you can find the current with this formula:

   I = \frac{V}{R} $$ **Example:** If the voltage is 12 V and the resistance is 4 Ω: $$ I = \frac{12 \, \text{V}}{4 \, \text{Ω}} = 3 \, \text{A} $$ So, the current is 3 amperes.

3. Finding Resistance ($R$):

   If you have the voltage and the current, you can find the resistance using this formula:

   R = \frac{V}{I} $$ **Example:** If the voltage is 18 V and the current is 6 A: $$ R = \frac{18 \, \text{V}}{6 \, \text{A}} = 3 \, \text{Ω} $$ So, the resistance is 3 ohms.

Understanding Ohm's Law helps you explore more about electricity and how circuits work. Keep experimenting and, most importantly, have fun with electricity!