MDCAT Physics MCQ #557

Two wires carry same current but different cross-sectional areas. How does current density compare?

MDCAT Physics MCQ #557

  1. Question 1

    Q1. Two wires carry same current but different cross-sectional areas. How does current density compare?

    • A) Higher in wider wire
    • B) Higher in narrower wire
    • C) Density equals current
    • D) Density depends on voltage

    Answer: Higher in narrower wire

    Explanation: Current density = current/area. Narrower wire has higher density. Option A reverses the relationship.