Learn Electricity with
Interactive Calculators
Discover electrical concepts through practical calculators and visual explanations. Perfect for students, electricians, and technology enthusiasts.
V
A
W
Fundamental Concepts
Understand the fundamental concepts of electricity through simple explanations, analogies, and visual representations.
Voltage (Voltage)
Voltage is the "pressure" that pushes electric current through a circuit. It is measured in Volts (V).
V = I × R
Volts (V)
🚰 Water analogy: Voltage is like water pressure in a pipe. The higher the pressure, the stronger the water flows.
12V
Examples:
AA Battery: 1.5V
House outlet: 230V
Car battery: 12V
Current (Amperage)
Current is the amount of electricity that passes through a point in one second. It is measured in Amperes (A).
I = V / R
Amperes (A)
🌊 Water analogy: Current is like water flow rate - how many liters of water pass through the pipe in one second.
Electron flow →
Examples:
LED: 0.02A
Regular bulb: 0.5A
Refrigerator: 2A
Electric car: 15A
Power
Power is the energy consumed per second. It is measured in Watts (W).
P = V × I
Watts (W)
Power = Voltage × Current. The higher the power, the more energy the device consumes.
V
×I
=P
Voltage × Current = Power
Examples:
Phone: 5W
Laptop: 65W
Vacuum cleaner: 1000W
Oven: 2000W
Resistance
Resistance is the opposition that a material puts in the path of current. It is measured in Ohms (Ω).
R = V / I
Ohms (Ω)
🚧 Water analogy: Resistance is like a narrow section in the pipe that slows down the water flow.
Low resistance
High current
High resistance
Low current
Examples:
Copper: Very low
Water: Medium
Rubber: Very high
Interactive Calculators
Use our interactive calculators to understand and calculate electrical values.
Ohm's Law Calculator
Calculate voltage, current, resistance, or power
Why Use VoltLab for Electrical Calculations?
Precise and Easy-to-Use Calculators
Our interactive calculators provide accurate results for voltage, current, power, and resistance. Perfect for students, electricians, and engineers who need quick and precise calculations.
Learning Through Practice
Understand electrical concepts through visual explanations and simple analogies. Each calculator comes with detailed explanations to help you understand the principles behind the formulas.
Key Features:
- ✓ Voltage calculator with Ohm's Law
- ✓ Electrical power calculator (Watts)
- ✓ Multi-device consumption calculator
- ✓ Visual explanations for each concept
- ✓ Full support in Romanian and English
- ✓ Modern and user-friendly interface