Resistance and Temperature

• Apparatus: Resistor, Battery, Connecting wires, Ammeter, Voltmeter, Oven.
• Procedure:

  • Make a circuit with the battery, connecting wires, ammeter and voltmeter, resistor.
  • Measure the resistance of the resistor using the formula R=V/I.
  • Heat the resistor in the oven. Place the resistor back into the circuit.
  • Measure the readings again and calculate R=V/I.
  • Draw up a conclusion about how the resistance increases as temperature increases.
• Procedure:

  • Make a circuit with the battery, connecting wires, ammeter and voltmeter, resistor.
  • Measure the resistance of the resistor using the formula R=V/I.
  • Heat the resistor in the oven. Place the resistor back into the circuit.
  • Measure the readings again and calculate R=V/I.
  • Draw up a conclusion about how the resistance increases as temperature increases.