Magnetic field due to a toroid
0
The toroid is a hollow circular ring on which a large number of turns of a wire are closely wound.
Consider a toroid of an anchor ring of radius = r
Let n be the number of turns
Let n be the number of turns
Suppose that current I is passed through the toroid, then the magnetic field will be same at all points on toroid.
The magnetic field direction is tangent of the ring
B . L = μ0 × I
[ according to amphere's circuital law]
Total number of turns = 2 π r n
Total current = 2 π r n I
Thus, B × 2 π r = μ0 × 2 π r n I
B = μ0 n I
B . L = μ0 × I
[ according to amphere's circuital law]
Total number of turns = 2 π r n
Total current = 2 π r n I
Thus, B × 2 π r = μ0 × 2 π r n I
B = μ0 n I
