Derived quantities
Derived quantities in electricity are quantities that are calculated or derived from the fundamental quantities of electricity. These fundamental quantities include current, voltage, and resistance. Derived quantities allow us to describe and measure various aspects of electric circuits and phenomena. Examples of derived quantities in electricity include: 1. Power (P): Power measures the rate at which work is done or energy is transferred in an electric circuit. It is calculated using the formula P = IV, where I is the current and V is the voltage. The SI unit of power is the Watt (W). The measuring instrument for power is called a wattmeter. 2. Energy (E): Energy measures the total amount of work done or consumed by an electric circuit. It is calculated by multiplying power (P) by time (t). The SI unit of energy is the Joule (J). The measuring instrument for energy is called an energy meter. 3. Electric Charge (Q): Electric charge measures the quantity of electric charge flowing ...