A long wire carrying a steady current is bent into a circular loop of one turn. The magnetic field at the centre of the loop is B. It is then bent into a circular coil of n turns. The magnetic field at the centre of this coil of n turns will be
nB
n2B
2nB
2n2B
Magnetic field due to cCrcular Current Carrying arc -
- wherein
Let L be the length of the wire
At the centre of loop
Option 1)
nB
This is incorrect option
Option 2)
n2B
This is correct option
Option 3)
2nB
This is incorrect option
Option 4)
2n2B
This is incorrect option