MDCAT Physics MCQ #546

A diode is a non-ohmic conductor. Which statement correctly describes its behavior?

MDCAT Physics MCQ #546

  1. Question 1

    Q1. A diode is a non-ohmic conductor. Which statement correctly describes its behavior?

    • A) Resistance increases with temperature
    • B) Resistivity changes with length
    • C) Current-voltage relationship is linear
    • D) Resistance depends on voltage polarity

    Answer: Resistance depends on voltage polarity

    Explanation: Non-ohmic materials have resistance that varies with voltage direction. Option C describes ohmic behavior.