Circuits

• Parts of a Circuit

  Source, conductor, load, and control.
• Source 


  Where the electrical energy comes from.

  
• Conductor


  Carries the current.

  
• Load


  Converts electricity into other forms of energy.
• Control


  Device that opens/closes the circuit.
• Ohm's Law


  Measure of resistance (in Ω).
• Formula for Ohm's Law

  R=V/I

  -------------------

  R means OHMS

  V means VOLTS

  I means AMPS/AMPERES
• Voltmeter


  It is PARALLEL in the circuit (EXTENTION). If it is taken out of the circuit, it STILL WORKS. Measures the VOLTS of the SOURCE.
• AMETER


  Is SERIES in the circuit (WITHIN the circuit). If it is taken out of the circuit, it STOPS WORKING. Measures AMPS of the CURRENT.
• Increasing the LENGTH of the CONDUCTOR?


  INCREASES the resistance because it takes LONGER for the electrons to get from the source to the load.
• INCREASING the DIAMETER of the Conductor?


  DECREASES resistance because it allows for MORE electrons to travel to the source at a single time.
• How do you CHANGE Voltage?

  Increase or decrease the VOLTAGE or AMOUNT of batteries that contribute electricity to the source.