Physics · Magnetic effect of current · biot savart law and magnetic field due to straight conductor ,arc and ring
JEE MainsNEET
A circular coil has N closely wound turns, radius R and current I. Which statements are correct?
Select all that apply
The centre field is proportional to N.
The centre field is proportional to I.
At fixed N and I, the centre field is inversely proportional to R.
Its magnetic moment is proportional to NR².