Understanding Current, Voltage, Resistance, and Electricity Consumption

The physical relationship between current, voltage, and resistance is described by Ohm's Law: V = I × R
Where:

Key Electrical Quantities
Quantity Symbol Unit Description
Current I A (Ampere) Flow of electric charge
Voltage V V (Volt) Electrical potential difference
Resistance R Ω (Ohm) Opposition to current flow
Power P W (Watt) Rate of energy consumption

Electricity Consumption

The amount of electricity consumed is measured in kilowatt-hours (kWh).
Energy (kWh) = Power (kW) × Time (h)

  1. Calculate Power using P = V × I
  2. Convert Power to kilowatts: 1 kW = 1000 W
  3. Multiply by time in hours to get energy consumed.

Summary