1. What is the Watts Formula?

The Watts formula calculates power (P) by dividing energy (J) by time (s). It represents the rate at which work is done or energy is transferred.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( W \) — Power in watts
• \( J \) — Energy in joules
• \( s \) — Time in seconds

Explanation: One watt is equal to one joule of energy transferred per second. This fundamental relationship is used throughout physics and engineering.

3. Importance of Power Calculation

Details: Calculating power is essential in electrical engineering, mechanical systems, and energy management to determine energy efficiency and system requirements.

4. Using the Calculator

Tips: Enter energy in joules and time in seconds. Both values must be positive numbers. The calculator will compute the power in watts.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between watts and joules?
A: Joules measure energy, while watts measure power (energy per unit time). 1 watt = 1 joule per second.

Q2: How is this different from electrical power calculations?
A: Electrical power can also be calculated as P = IV (current × voltage), but both formulas ultimately measure power in watts.

Q3: What are common wattage values for household appliances?
A: Light bulbs: 5-100W, Laptop: 50W, Microwave: 600-1200W, Refrigerator: 100-400W.

Q4: Can I use this for mechanical power calculations?
A: Yes, this formula applies to all forms of power, whether electrical, mechanical, or thermal.

Q5: How does this relate to kilowatt-hours?
A: Kilowatt-hours are a unit of energy (power × time), where 1 kWh = 3.6 million joules.