Electrical Calculator
Calculate electrical parameters including voltage, current, resistance, power, and AC circuit analysis
Electrical Calculator
Calculate voltage, current, or resistance using Ohm's Law (V = I × R). Provide any two values to find the third.
Electrical Formulas & Concepts
Essential electrical engineering formulas and principles
Basic Laws
Ohm's Law
V = I × R (Voltage = Current × Resistance)
Power Laws
P = V × I = V²/R = I²R
Energy
E = P × t (Energy = Power × Time)
AC Circuits
Reactance
XL = 2πfL (Inductive), XC = 1/(2πfC) (Capacitive)
Power Factor
PF = cos(φ) = P/S (Real Power / Apparent Power)
Transformer
V₁/V₂ = N₁/N₂ = I₂/I₁
Safety Tips
• Always turn off power before working
• Use proper PPE and insulated tools
• Verify calculations before implementation
Common Units
• Voltage: V (volts)
• Current: A (amperes)
• Resistance: Ω (ohms)
• Power: W (watts)
Applications
• Circuit design and analysis
• Power system calculations
• Component sizing