Introduction to Robotics/Electrical Components/Assignment/Students

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Reading[edit | edit source]

Questions[edit | edit source]

Ohm's Law[edit | edit source]

  1. A computer serial port cable has a few requirements: the signal is 5 volts, and the total current flowing into the port can be up to 2 milliamps. If the current is too high, the circuit will be ruined. How much resistance must a serial cable have at 5 volts to keep the current below 2 milliamps?
  2. If we have a circuit with a set resistance R, we want to change the voltage and measure the current. Which of the following shapes is our graph likely to have:
    1. Parabola
    2. Hyperbola
    3. Line
    4. Sine Wave

Resistors[edit | edit source]

You have the following resistor color codes, what resistance do these correspond to?

brown black brown gold
orange orange red gold
brown black yellow gold
green green blue gold

Ports[edit | edit source]

  1. We have a sensor that outputs values between 0 and 116. How many parallel input ports do we need?
  2. If we have the statement "DIRS = %1100110101001110", what ports are inputs, and what ports are outputs?