resistors

• Resistor


  A component that adds resistance to a circuit, allowing control of the current flow
• Resistor


  • Symbol is a zig-zag line
  • Used to add resistance to a circuit
• Current-Potential Difference graph for an Ohmic conductor

  1. Plot potential difference on x-axis

  2. Plot current on y-axis

  3. Graph is a straight line passing through the origin

  4. Indicates current is directly proportional to potential difference

  5. Resistance is constant
• Resistance only stays constant if the temperature is constant
• Resistance is calculated by dividing potential difference by current
• The unit of resistance is the ohm