How will the magnetic field produced at a point P by a current carrying circular coil change if we increase the : (i) value of current flowing through the coil. (ii) distance of the point P from the coil. (iii) number of turns of the coil ?
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B=u°/4π×2m /(r^2+x^2)^3/2 where m is mag. dipole moment m= nia
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