Measuring Resistance

• What can the resistance of a component be calculated using?

  This circuit
• Where is the component to be tested placed?

  At R1
• What does the variable resistor allow in the experiment?

  Different pairs of readings to be taken
• What are the readings recorded and plotted on?

  An I/V graph
• What does the gradient of the line produced represent?

  1 ÷ resistance of the component
• What does a steeper line on the graph indicate?

  Lower resistance
• What is the process for measuring resistance in a circuit?

  • Place the component at R1
  • Use a variable resistor for different readings
  • Record readings on an I/V graph
  • Calculate the gradient to find resistance