Current is the flow of electric charge through a conductor, measured in amperes (A). Voltage is the measure of electric potential difference between two points, measured in volts (V). Power is the rate at which electrical energy is transferred or used, measured in watts (W).
Current, voltage, and power are related through Ohm's Law, which states that current is equal to voltage divided by resistance (I = V/R). Power is equal to current multiplied by voltage (P = IV). This means that changes in one of these variables can affect the others.
The unit for measuring current is amperes (A), for voltage it is volts (V), and for power it is watts (W). Other common units include milliamperes (mA) for small currents and kilowatts (kW) for large powers.
The higher the resistance in a circuit, the lower the current will be. This is because resistance impedes the flow of current. Inversely, the lower the resistance, the higher the current will be.
Understanding current, voltage, and power is important in everyday life because electricity is a fundamental aspect of modern society. It allows us to power our homes, use electronic devices, and even recharge our phones. By understanding these concepts, we can make informed decisions about our energy usage and potentially save money on our electricity bills.