Month: September 2026

Basic Electrical Information QuantitySymbolUnitBasic formulaVoltageVVolt (V)V = I × RCurrentIAmpere (A)I = V ÷ RResistanceROhm (Ω)R = V ÷ IPowerPWatt (W)P = V × IEnergyEWh / kWhE = P × timeFrequencyfHertz (Hz)AC supply frequency...

Basic Electrical Terms TermMeaningUnitVoltage (V)Electrical pressure that pushes currentVolt (V)Current (I)Flow of electric chargeAmpere (A)Power (P)Rate at which electrical energy is usedWatt (W)Resistance (R)Opposition to...

1. Electrical Units NameSymbolUnitVoltageVVoltCurrentIAmpere (A)PowerPWatt (W)ResistanceROhm (Ω)FrequencyfHertz (Hz)EnergyEkWh 2. Main Formulas Voltage: V = I × R Current: I = V ÷ R Resistance: R = V ÷ I Power: P = V × I Current...

1. Basic electrical quantities QuantitySymbolUnitBasic meaningVoltageVVolt (V)Electrical pressureCurrentIAmpere (A)Flow of electric chargePowerPWatt (W)Rate of electrical energy useResistanceROhm (Ω)Opposition to current...

1. Voltage (V) Voltage is the electrical pressure that pushes current through a circuit. Unit: Volt (V) Example: A normal household supply in India is around 230 V AC. Think of voltage like water pressure in a pipe. 2. Current...