Calculate the power and monthly consumption of your electrical devices with detailed explanations.
Power: W
What is Electric Power?
Electric power (P) is the rate at which electrical energy is consumed or produced. It is expressed in watts (W), where:
1 W = 1 V × 1 A
Fundamental Formulas
- P = V × I (for DC circuits)
- P = V × I × cos(φ) (for single-phase AC)
- Energy (kWh) = (P × hours)/1000
- Cost = Energy × Energy cost
Involved Quantities
- Voltage (V): the electric potential difference.
- Current (A): the flow of electric charge.
- Power (W): energy consumed per unit of time.
- Energy (kWh): usage over time.
- Hours: daily usage time.
- Cost per kWh: based on your electricity rate.
Knowing these values helps you better estimate your electricity bill and make informed energy-saving decisions.
