Two identical conducting spheres with negligible volume have $2.1 nC$ and $- 0.1 nC$ charges, respectively. They are brought into contact and then separated by a distance of $0.5 m$ . The electrostatic force acting between the spheres is ___ $\times 10^{- 9} N$ .
[Given : $4 π ε_{0} = \frac{1}{9 \times 10^{9}}$ SI unit]

Question

Two identical conducting spheres with negligible volume have

2.1 nC

and

- 0.1 nC

charges, respectively. They are brought into contact and then separated by a distance of

0.5 m

. The electrostatic force acting between the spheres is ___

\times 10^{- 9} N

.
[Given :

4 π ε_{0} = \frac{1}{9 \times 10^{9}}

SI unit]

Aicharya · Accepted Answer

q = 2 . 1 - 0 . 1 2 &#160; nC = 1 &#160; nC f = 9 &#215; 10 9 &#215; 10 - 18 0 . 5 2 = 36 &#215; 10 - 9

Two identical conducting spheres with negligible volume have 2 . 1   nC and - 0 . 1   nC charges,…