Question

Two small spheres each having of mass of 20g are suspended from a common point by two insulating strings of length 40cm. The spheres are indentically charged and the seperation between the balls at equilibrium is found to be 4cm. Find the charge on each sphere

Answer 1

Answer:

Explanation:

T = cosΘ =mg .... 1

TsinΘ= Fe.....2

using given conditions in above conditions we get

Q^2=17 x  10^-7x 10 ^-9

17x 10 ^ - 16

Q= √17 x  10^-16 = 4.123  x 10^-8 C