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3 years ago

If element X has 99 protons, how many elctrons does it have?

Physics

2 answers:

slega [8]3 years ago

7 0

It has 99 electrons because an element has the same number of protons and electrons

Art [367]3 years ago

3 0

The same amount. the number of protons is always equal to the number of electrons in a normal state without electric flow. they balance each other out. protons are positive, electrons are negative.

so the number of electrons in this case is 99

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Explanation:

From the question we are told that

The length is $l = 0.65 \ m$

The diameter is $d = 3.2 cm = 0.032 \ m$

The number of loops is $N = 8400$

Generally the radius is evaluated as

$r = \frac{ 0.032 }{2} = 0.016 \ m$

The inductance is mathematically represented as

$L = \frac{ \mu_o * N^2 * A }{ l }$

Here $\mu_o$ is the permeability of free space with value $\mu_o = 4\pi * 10^{-7} N/A^2$

A is the cross-sectional area which is mathematically evaluated as

$A = \pi r^2$

=> $A = 3.142 * (0.016)^2$

=> $A = 0.000804 \ m^2$

=> $L = \frac{ 4\pi * 10^{-7} * 8400^2 * 0.000804 }{ 0.65 }$

=> $L = 0.1097 \ H$

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