KVPY2015PhysicsMagnetic Effects of Current
A wire bent in the shape of a regular n polygonal loop carries a steady current I. Let 1 be the perpendicular distance of a given segment and R be the distance of given segment and R be the distance of a vertex both from the centre of the loop. The magnitude of the magnetic field at the centre of the loop is given by.
Options
- An ₀ I 2 l ( / n)
- Bn ₀ I 2 R ( / n)
- Cn ₀ I 2 l ( / n)
- Dn ₀ I 2 R ( / n)
Correct answer
A. n ₀ I 2 l ( / n)
Step-by-step solution
B= ₀ i 4 l 2 Where 2 = 2 n