Question

Express Biot-savart law in the vector form. (ii) Use it to obtain the expression for the magnetic field at an axial point, distance d from the center , of a circular coil of radius R carrying current I. (iii) Also , find the ratio of the magnitudes of the magnetic field of this coil at the center at an axial point for which x=R√3

Answer 1

The formula for time is: T (period) = 1 / f (frequency). λ = c / f = wave speed c (m/s) / frequency f (Hz). The unit hertz (Hz) was once called cps = cycles persecond