ELECTRICAL SYSTEMS (M1 & M2)

• ELECTRICAL SYSTEMS - also known as circuits or networks
• three fundamental components of the electrical system

  1. RESISTOR
  2. CAPACITOR
  3. INDUCTOR
• two electrical characteristics of the electrical circuit

  1. VOLTAGE
  2. CURRENT
• VOLTAGE - is the difference in charge between two points
• CURRENT - is the rate at which charge is flowing
• RESISTANCE - is a material's tendency to resist the flow of charge (current).
• ALTERNATING CURRENT - what is AC
• DIRECT CURRENT - what is DC
• AMPHERE - Unit of electric current
• AMMETER - unit for measuring current is called
• DC - a type of electric current whose direction does not change
• AC - The type of electric current whose direction changes continuously throughout the time
• RECTIFIERS - used to convert the alternating current into direct current
• INVERTERS - to convert the direct current into alternating current.
• VOLT - unit of electric Potential difference
• ELECTROMOTIVE FORCE - what is EMF
• VOLTMETER - Measuring Instrument for Voltage
• 1.5 VOLTS - common voltage for flashlight batteries
• 12 VOLTS - common voltage for automobile batteries
• 110 to 120 or 220 to 240 - Common voltages supplied by power companies to consumers
• OHM - unit of electrical resistance
• GEORG SIMON OHM - German physicist who studied the relationship between voltage, current and resistance.
• BIOMASS - fuel that is developed from organic materials
• WATTS AND KILOWATTS - electricity is measured in?
• WATTHOURS - Electricity use over time is measured in
• RENEWABLE ENERGY SOURCE - natural resource that can replace energy quickly and dependably.
• NON-RENEWABLE ENERGY SOURCE - source with a limited supply that we can mine or extract from the earth, and it’ll eventually run out.
• SUN - primary source of energy
• GEOTHERMAL ENERGY - is the energy that is produced from beneath the earth.
• The power of the WATER is used to turn generators to produce the electricity that is then used. It is non polluting, entails no waste or produces toxic gases, and environment friendly
• WIND ENERGY - is a form of solar energy
• AMPACITY - maximum amount of electric current a conductor or device can carry before sustaining immediate or progressive deterioration
• CAPACITOR - device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulator
• CONDUCTOR - Any material where electric current can flow freely.
• CIRCUIT - closed path in which electrons from a voltage or current source flow
• CIRCUIT BREAKER - automatic device for stopping the flow of current in an electric circuit.
• CURRENT - flow of an electric charge through a conductor (measured in amphere)
• FREQUENCY - number of cycles per second, measured in Hertz.
• FUSE - circuit interrupting device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level.
• GENERATOR - device which converts mechanical energy into electrical energy.