Current, potential difference and resistance common mistakes

Common mistakes

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Explain that some resistors have constant resistance while others change resistance as current changes..

  Fix itAnswer by clearly explaining how to explain that some resistors have constant resistance while others change resistance as current changes..

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Describe an ohmic conductor at constant temperature as having current directly proportional to potential difference..

  Fix itAnswer by clearly explaining how to describe an ohmic conductor at constant temperature as having current directly proportional to potential difference..

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Explain that an ohmic conductor has constant resistance as current changes when temperature is constant..

  Fix itAnswer by clearly explaining how to explain that an ohmic conductor has constant resistance as current changes when temperature is constant..

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Describe how the resistance of a filament lamp increases as filament temperature increases..

  Fix itAnswer by clearly explaining how to describe how the resistance of a filament lamp increases as filament temperature increases..

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Describe how current through a diode flows in one direction only..

  Fix itAnswer by clearly explaining how to describe how current through a diode flows in one direction only..

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Explain that a diode has very high resistance in the reverse direction..

  Fix itAnswer by clearly explaining how to explain that a diode has very high resistance in the reverse direction..

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Describe how the resistance of a thermistor decreases as temperature increases..

  Fix itAnswer by clearly explaining how to describe how the resistance of a thermistor decreases as temperature increases..

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Explain how thermistors can be used in circuits such as thermostats..

  Fix itAnswer by clearly explaining how to explain how thermistors can be used in circuits such as thermostats..

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Describe how the resistance of an LDR decreases as light intensity increases..

  Fix itAnswer by clearly explaining how to describe how the resistance of an LDR decreases as light intensity increases..

• Resistors common mistake 1

  Giving a vague answer instead of directly addressing: Explain how LDRs can be used in circuits such as automatic lighting..

  Fix itAnswer by clearly explaining how to explain how LDRs can be used in circuits such as automatic lighting..