Answer:
Linear charge density (I) = Q/2πR
Explanation:
Linear charge density (I) = charge (Q) per unit length(L)
I = Q/L
For a thin ring of charge with radius R, the length will be equal to the circumference of a circle.
Circumference of a circle = 2πR
Then, the length of the thin ring of charge is 2πR
Linear charge density (I) = Q/2πR
Therefore, for a thin ring of charge of radius R, which lies in the x-y plane and is centered on the z-axis. The linear charge density, l, of the loop is given by Q/2πR