# What is the net charge if a sphere with 5 extra electrons and one that is missing 20 electrons( hence _____"extra"_________) are connected by a conducting wire? Paire Up: Determine net charge ( use...

What is the net charge if a sphere with 5 extra electrons and one that is missing 20 electrons( hence _____"extra"_________) are connected by a conducting wire?

Paire Up:

Determine net charge ( use 1.6x109^-19), either + or -, depending on __________

How much charge will be on each sphere if they are identical in shape and size?

Why is coulombs law called an inverse square law?

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### 1 Answer

The sphere having 5 extra electrons will give up the electrons, through the thin wire conductor, to the sphere having 20 missing electrons.

The couple of two spheres now misses 15 electrons, hence, the net charge can be evaluated, such that:

`Q = N*(-e)`

`e = 1.6*10^(-19)C`

`N = -15`

`Q = -15*1.6*10^(-19) => Q = 24*10^(-19)C`

**Hence, evaluating the net charge of the couple of spheres, yields **`Q = 24*10^(-19)C.`

The equation that links the electrostatic forces between two charged particles and the distance between them is called Coulomb's law.

`F = k/d^2*(q_1*q_2)`

**Since the relation between the electrostatic force and the distance between two charged particles is an inverse proportional because the force is inverse proportional to the square of the distance, `F = 1/d^2` , then, the Coulomb's law can be called inverse square law.**