Basic EE Theory Charge Current Voltage Resistance Practice Power supply Breadboards Resistor code Multimeters.

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Presentation transcript:

Basic EE Theory Charge Current Voltage Resistance Practice Power supply Breadboards Resistor code Multimeters

A property of particles that experience electromagnetic force Two kinds of charge: positive and negative Force due to charge obeys an inverse square law Charge is measured in coulombs Electrons and protons each have the same size charge (but of opposite polarity) Magnitude of one charged particle = 1.6 * coulombs Theory: ChargeCharge

Current is charge in motion Most of the time we think about electrons moving through metallic wires The flow rate of charge is measured in couloumbs/second or Amperes (Amps) charge count/time = couloumbs/sec = Amperes 1 Amp = (1/1.6) * electrons / sec Theory: CurrentCurrent

Voltage is the driving force behind current Voltage is the electrical potential energy a charge has due to its position in space potential energy per unit of charge "path independent“ Voltage is measured in Joules/Coulomb or Volts (V) A Joule to the unit of energy Positive voltage is defined such that negatively charged particles are pulled towards higher voltages Potential energy can be converted into other forms of energy Theory: VoltageVoltage

Resistance is a property of materials Resistors are electrical components with known resistance Resistor codeResistor Resistors convert voltage to heat Ohm's law describes the relationship between voltage and current flow through a resistor V = I R V is the voltage across the resistor I is the current flowing through the resistor R is the resistance (depends upon the material) Resistance is measured in Ohms, Ω Theory: ResistanceResistance

Practice: Power Source

Practice: Breadboard

Practice: Resistor Code

Practice: Multimeters More detail on using multimeters Voltage: An across measurement: Current: A through measurement :