ক্ষমতা ক্যালকুলেটর

Calculate electrical power, voltage, current, and resistance. Free online power calculator for electrical engineering.

ক্ষমতা ক্যালকুলেটর কী?

A power calculator helps you understand the relationship between electrical power, voltage, current, and resistance. Power, measured in watts, represents the rate at which energy is consumed or produced. Whether you're sizing a generator, calculating electricity costs, or designing an electrical circuit, understanding power calculations is essential.

Electrical power is one of the most practical measurements in daily life. Your electricity bill is based on kilowatt-hours (kWh), appliance ratings are in watts, and circuit breakers are sized based on the current (amperes) they can safely handle. This calculator helps you determine any electrical parameter when you know the others, making it invaluable for both DIY projects and professional electrical work.

সূত্র

P = V × I (Power = Voltage × Current)

P = I² × R (Power = Current² × Resistance)

P = V² / R (Power = Voltage² ÷ Resistance)

Where: P = Power (watts), V = Voltage (volts), I = Current (amperes), R = Resistance (ohms)

কীভাবে গণনা করবেন

Select which value you want to calculate (power, voltage, current, or resistance).
Enter the known values.
The calculator computes the unknown value.
View all related electrical parameters.
Use the results for circuit design or energy cost estimation.

উদাহরণ

A 100-watt light bulb connected to a 120V circuit draws I = P/V = 100/120 = 0.833 amperes. Its resistance is R = V²/P = 120²/100 = 144 ohms. Running this bulb for 10 hours consumes 1 kWh of energy.

প্রধান সুবিধাসমূহ

Electrical mechanical power multiple formulas
Convert watt hp BTU kilowatt seamlessly
Understand power current voltage resistance
Determine consumption efficiency

এড়ানোর সাধারণ ভুলসমূহ

Real power watts vs apparent VA AC
Forgetting power factor in AC
Horsepower watts without conversion

প্রো টিপস

1 hp = 746 watts for conversion
Account power factor real vs apparent
Use P = F*v for mechanical power

মূল শব্দ ব্যাখ্যা

Watt W: SI power joule per second
Horsepower: 550 ft-lb per second
Efficiency: Output over input percentage
Power Factor: Real vs apparent power ratio

এই ক্যালকুলেটর কখন ব্যবহার করবেন

Sizing generators transformers supplies
Calculating appliance energy costs
Comparing engine motor power output

সাধারণ ব্যবহারের ক্ষেত্র

Calculating electricity consumption and costs for appliances
Sizing circuit breakers and wiring for electrical installations
Determining generator capacity for backup power systems
Analyzing power requirements for electronic projects

সচরাচর জিজ্ঞাসিত প্রশ্ন

What's the difference between watts and kilowatt-hours?

Watts measure power (rate of energy use). Kilowatt-hours measure energy consumed over time. A 1,000-watt appliance running for 1 hour uses 1 kWh of energy.

How do I calculate electricity cost?

Multiply the appliance's power in kW by hours of use, then by your electricity rate per kWh. Example: A 1.5 kW heater running 8 hours at $0.12/kWh costs 1.5 × 8 × 0.12 = $1.44.

ক্ষমতা ক্যালকুলেটর