engineering physics MCQ #956

A battery has an emf of 12 V and internal resistance 2 ohms. When connected to an external resistance of 4 ohms, the current will be

engineering physics MCQ #956

  1. Question 1

    Q1. A battery has an emf of 12 V and internal resistance 2 ohms. When connected to an external resistance of 4 ohms, the current will be

    • A) 1 A
    • B) 2 A
    • C) 3 A
    • D) 4 A

    Answer: 2 A

    Explanation: Using I = E/(R + r), we get I = 12/(4 + 2) = 12/6 = 2 A.