Electrical Circuits

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Shows and explains series, parallel and combination circuits. Uses Kirchoff's first and second law in calculations.
**More good stuff available at:
www.wsautter.com
and
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Electrical Circuits

  1. 1. Sautter 2015
  2. 2. (1) A source voltage, that is, an electron pump usually a battery or power supply. [ ENERGY IN] (2) A conductor to carry electrons from and to the voltage source (pump). The conductor is often a wire. [ENERGY TRANSFER] (3) A load or resistance. A point where energy is extracted form the circuit in the form of heat, light, motion, etc. [ENERGY OUT] All electrical circuits require three elements. 2
  3. 3. ELECTRON PUMP (SOURCE VOLTAGE) [ENERGY IN] LOAD (RESISTANCE) [ENERGY OUT] CONDUCTOR ELECTRONS OUT OF SOURCE ELECTRONS OUT OF LOAD ELECTRONS BACK TO SOURCE ELECTRONS INTO LOAD HIGHER ENERGY ELECTRONS LOWER ENERGY ELECTRONS CONDUCTOR 3
  4. 4. Voltage Source (Potential Rise) Low Energy current High Energy current Resistance (Potential Drop) Low Energy current High Energy current 4
  5. 5. volts Battery current Electrons have Less Energy Electrons have More Energy Electrons get An energy boost current 5
  6. 6. volts Resistor current Electrons have More Energy Electrons have Less Energy Energy is lost In the resistor 6
  7. 7. (1) VOLTAGE RISE – MEASURES THE ENERGY GIVEN TO ELECTRONS AS THEY LEAVE A VOLTAGE SOURCE. IT IS MEASURED IN VOLTS (+) (2) VOLTAGE DROP – MEASURES THE ENERGY LOST BY TO ELECTRONS WHEN THEY LEAVE A RESISTANCE. IT IS MEASURED IN VOLTS (-) (3) CURRENT – MEASURES THE FLOW RATE THROUGH A CONDUCTOR. IT IS MEASURED IN AMPERES (AMPS) (4)RESISTANCE – MEASURES THE OPPOSITION TO CURRENT FLOW THROUGH A CONDUCTOR OR RESISTOR IT IS MEASURED IN OHMS (ITS SYMBOL IS OMEGA ) 7
  8. 8. 6.25 x 10 18electrons 1 coulomb 1 second 1 amp = 1 coul / sec 1 joule 1 coulomb of charge 1 volt = 1 joule / coul ELECTRICAL QUANTITIES 8
  9. 9. AMPS volts Ammeters measure current in amperes and are always wired in series in the circuit. Voltmeters measure potential in volts and are always wired in parallel in the circuit. 9
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