Question

    For a cell terminal potential difference is 3.5 V when circuit is open and reduces to 2.5 V when cell is connected to a resistance of R = 10Ω then determine internal resistance of cell is

    A 4 Ω Correct Answer Incorrect Answer
    B 2 Ω Correct Answer Incorrect Answer
    C 6 Ω Correct Answer Incorrect Answer
    D 3 Ω Correct Answer Incorrect Answer

    Solution

    2.5 = (3.5 × 10)/(10 + r) r = 4 Ω

    Practice Next

    Relevant for Exams: