engineering physics MCQ #988

The emf of a cell is 2 V and its internal resistance is 1 ohm. When it is connected to an external resistance of 4 ohm, the current is?

engineering physics MCQ #988

  1. Question 1

    Q1. The emf of a cell is 2 V and its internal resistance is 1 ohm. When it is connected to an external resistance of 4 ohm, the current is?

    • A) 0.4 A
    • B) 0.5 A
    • C) 0.6 A
    • D) 0.8 A

    Answer: 0.4 A

    Explanation: I = E / (R + r) = 2 / (4 + 1) = 0.4 A.