Watts to Ohms Calculator
Convert power and either voltage or current to resistance in ohms.
Select either voltage or current.
How to Convert Watts to Ohms
👋 Curious about how power in watts relates to resistance in ohms? Let’s break it down! 🚀
Watts to Ohms Formulas ✨
To calculate resistance (R) in ohms based on power (P) in watts, you can use one of the following formulas:
If Voltage (V) is Known:
R = V² / PIf Current (I) is Known:
R = P / I²Quick Trick: Use the formula that corresponds to the known value (Voltage or Current)!
Understanding the Conversion
To calculate resistance in ohms from power in watts, you need either the voltage or the current:
- If you know the voltage (V), use: R = V² / P
- If you know the current (I), use: R = P / I²
Simply input the known values and use the appropriate formula to calculate the resistance.
Let’s Solve One Together! 📝
Imagine you have the following measurements:
- 🔍 Power entered: 36 W
- ⚖️ Voltage entered: 12 V
Here’s how we figure it out:
1️⃣ Applying Formula:
Formula: R = V² / P
Calculation: R = (12 V)² / 36 W = 144 / 36 = 4 Ω
🎉 Answer: 4 ohms
What Do These Terms Really Mean? 🤔
Watt (W) – A Unit of Power! ⚡
Watts are a standard unit of power. Here’s what you need to know:
- 🔋 Used to measure electrical power.
- ⚡ 1 watt is equal to one joule per second.
Ohm (Ω) – A Unit of Resistance! 🔌
Ohms are a standard unit of resistance. Here’s what you need to know:
- ⚡ Used to measure electrical resistance.
- 🔋 1 ohm is the resistance that allows one ampere of current to flow with one volt of electrical potential.
Where Do We Use This in Real Life? 🌟
Electrical Engineering ⚡
Understanding resistance in circuits for design and analysis
Energy Efficiency 💡
Calculating resistance to optimize energy consumption
Appliance Ratings ⚙️
Determining resistance ratings for electrical appliances
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