How does the strenght of the magnetic field at the centre of a circular coil of a wire depend on. a) Radius of the coil,
b) No.of turns in the coil.
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b) No of turns in the coil.
It depends on no of turns how much ever u turn the magnet is that much strong
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t is directely proportional to current through circular loop.
B=µI/2r
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