Question:
17 A flat coil of inner radius a and outer radius b has a
Last updated: 6/11/2023
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17 A flat coil of inner radius a and outer radius b has a large number N of turns of very fine wire which is closely wound What is the magnetic field B at the centre of the coil if it carries current I Check that your answer gives B HONI 2a when b a In 2 Ans