I-V Characteristics

• What are the three steps to find a component's I-V characteristic?

  Vary resistor, reverse current, plot graph
• Why do you vary the variable resistor in the first step?

  To change the current through the circuit
• What should you do after taking readings of I and V in the first step?

  Repeat several times
• What is the purpose of swapping over the wires connected to the battery?

  To reverse the current direction
• What do you do after reversing the current in step 2?

  Repeat step 1
• What is the final step in determining a component's I-V characteristic?

  Plot values on an I-V graph
• What components are mentioned in the I-V characteristics study material?

  • Resistor (at constant temperature)
  • Filament lamp
  • Diode
• What is the significance of the I-V graph?

  • Shows relationship between current (I) and voltage (V)
  • Helps analyze component behavior under different conditions