Question

    A circular coil of wire consisting of 120 turns, each of

    radius 12 cm carries a current of 0.30 A. What is the magnitude of the magnetic field B at the centre of the coil? (π = 3.14 )
    A 18.84 × 10^−5 T Correct Answer Incorrect Answer
    B 20.84 × 10^−5 T Correct Answer Incorrect Answer
    C 18 × 10^−5 T Correct Answer Incorrect Answer
    D 10.84 × 10^−5 T Correct Answer Incorrect Answer

    Solution

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