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?

**i.** The magnetic field is directly proportional to the magnitude of current flowing through a current carrying coil. There is increase in the magnetic field strength with the increase in current.

**ii.** The distance of point P is inversely proportional to the strength of magnetic field at P. Thus, more the distance, lesser is the magnetic field strength.

**iii.** The number of turns is directly proportional to the magnetic field strength. More the number of turns, more is the magnetic field strength.

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