A current carrying circular coil of 100 turns and radius 5.0 cm produces a magnetic field of 6.0 × 10–3 T at its centre. Find the value of the current.
number of turns n =100 turns
Radius r = 5cm =0.05m
Magnetic field B =6.0 × 10–3 T
Now,
i = 4.7740 A