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A circular coil has radius ' ', number of turns ' ' and carries a current ' '. Magnetic flux…
A circular coil has radius '$r$', number of turns '$N$' and carries a current '$I$'. Magnetic flux density '$B$' at its centre is:
- (a)$B = \mu_0 NI$
- (b)$B = \mu_0 NI / 2r$
- (c)$B = \mu_0 NI / 4\pi r$
- (d)$B = \mu_0 NI / 4r$
Answer
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From ISC 2023 Physics Paper 1, question 1(A)(iii).