Introduction to Robotics for Teachers Lab Instructors: Quentin Stoll (a.k.a - Q) Matthew Miller

Voltage Voltage is the electrical force, or "pressure", that causes current to flow in a circuit. It is measured in VOLTS (V).

Current Current is the movement of electrical charge - the flow of electrons through the electronic circuit. Current is measured in AMPERES (AMPS, A or I). Current would be the flow of water moving through the tube (wire).

Resistance Resistance is anything that causes an opposition to the flow of electricity in a circuit. It is measured in OHMS (  ).

Resistor Color Code

1st. & 2nd Color BandDigit it Represents-----Multiplier----- BLACK0 X1 BROWN1X10 RED2X100 ORANGE3X1,000 or 1K YELLOW4X10,000 or 10K GREEN5X100,000 or 100K BLUE6X1,000,000 or 1M VIOLET7Silver is divide by 100 GRAY8Gold is divide by 10 WHITE 9 Tolerances Gold= 5% Silver=10% None=20%

Ohm’s Law Ohm's Law is a formulation of the relationship of voltage, current, and resistance, expressed as:

Digital Multimeter A digital multimeter (DMM) is a common instrument in the laboratory for measuring voltages, currents, and resistances.

Measuring Voltage

Measuring Current

Measuring Resistance