engineering physics MCQ #945

The emf of a cell is 2 V and its internal resistance is 1 ohm. When connected to an external resistance of 3 ohm, the current is?

engineering physics MCQ #945

  1. Question 1

    Q1. The emf of a cell is 2 V and its internal resistance is 1 ohm. When connected to an external resistance of 3 ohm, the current is?

    • A) 0.5 A
    • B) 1 A
    • C) 0.25 A
    • D) 2 A

    Answer: 0.5 A

    Explanation: I = E / (R + r) = 2 / (3 + 1) = 0.5 A.