Um corpo tem uma carga igual a -32. 10-6 C. Quantos elétrons há em excesso nele? a)20x10^13 b)-20x10^13
1 answer
Question:
Um corpo tem uma carga igual a -32. 10-6 C. Quantos elétrons há em excesso nele?
a)20x10^13
b)-20x10^13
c)2,0x10^13
d)-2,0x10^13
e)NDA
a)20x10^13
b)-20x10^13
c)2,0x10^13
d)-2,0x10^13
e)NDA
Answers
a) 2*10^14 electrons
Explanation:
To find the amount of electrons you take into account that:
[tex]1C=6.2415*10^{18}electrons[/tex]
by replacing this values in the factor C of the charge given by the exercise you obtain:
[tex]-32*10^{-6}C=-32*10^{-6}(6.2415*10^{18}electrons)\approx2*10^{14}electrons[/tex]
= 2*10*10^13 =20*10^13 electrons (you take the absolute value)
hence, the total number of electrons in a charge of 32*10^-6 C is 2*10^13 electrons
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