Reactive

By Brent Mooney & Brian Wisneski
 * Chapter 10: Reactive Components**

Inductors are components that oppose change in current flow. It opposes this change by creating CEMF. An inductors does this because an inductor is a coiled wire. With the addition of a coil more magnetic lines of force are added. these magnetic lines cut through the wire producing current in the opposite direction.This **action** of inducuing CEMF with a change in current is called induction. Then inductance is the **ability** to induce CEMF with a change in current. The unit of measure for for inductance is the henry, which is abbreviated with an H or h. To find total inductance in a series circuit you add up the inductance: Lt=L1+L2+L3+ ect. Then for parallel circuits you use the same method as you would for resistors in parallel; Product over Sum, Reciprical method, Value over Number. capasators store energy and relesase that energyin a sudden, quick flash.Capasatence is the property of a electrical circuit or device which enables it to store electrical energy by means of electrostatic field.the principal parts of a capasator are two metal plates, a dielectric (paper, glass, mica, etc) insulator. Current does not flow through a capacator. How a capacator works: when a capacitor is charged, the positive upper plate of the capacitor attracts free electrons in the negative plate. because of the attraction of the positive charge to the negative charge, the positive charge pulls free electrons into the negative plate.The process of discharging a capacator is by completing the circuit to connect the capacator to a load (light, etc). Capacitance is measured in the unit called the farad, microfarad, and picofarad. the equation for capacitance is C=Q/E. The factors that determine capaitance is the plate area, plate distance, and the type of dielectric material. there are two main types of capacators. there are fixed and variable capacators. fixed capacators are just as they sound, they have a unchanging capacitance. variable capacators can be changed by rotating a shaft. athe capacator plates are connected to the shaft. as the shaft is turned, the location of the moving plates to the stationary plates changes. Polarized capacators have a marked negative and/or positive lead. it is very important to make sure to have your circuit designed properly to ensure that your capacator will not explode. Time constants for capacators determine the amount of time it takes for a capacator to become fully charged / discharged.the equation for this is T=RxC. T is the time consstant explained in seconds, R is the resistance in ohms, and C is the capacitance in farads. Capacators chage 63.3% for five time constants.
 * Inductors**
 * Capacitors**
 * Vocabulary

Resources** [|Inductors Wikipedia] [|Capacitors Wikipedia]