MDCAT Physics MCQ #503

A filament lamp and a resistor obey Ohm's law. Which property distinguishes their I-V graphs?

MDCAT Physics MCQ #503

  1. Question 1

    Q1. A filament lamp and a resistor obey Ohm's law. Which property distinguishes their I-V graphs?

    • A) Lamp graph is linear
    • B) Resistor graph is nonlinear
    • C) Lamp resistance increases with current
    • D) Resistor resistance decreases with current

    Answer: Lamp resistance increases with current

    Explanation: Lamp is non-ohmic with increasing resistance. Resistor has constant slope. Option C reflects temperature effects.