Answer:
The linear charge density is the ratio of the total charge to the circumference.
Step-by-step explanation:
As we know that linear charge density is defined at the charge per unit length in a given system of charge
here we have to find the linear charge density of the ring
so we can say it is given as

now we know that length of the ring is total length of its circumference
so we can say


so here correct answer will be
The linear charge density is the ratio of the total charge to the circumference.