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A plastic rod that has been charged to - 19 nC touches a metal sphere. Afterward, the rod's charge is - 10 nC.


A plastic rod that has been charged to - 19 nC touches a metal sphere. Afterward, the rod's charge is - 10 nC. You may want to review (Pages 607-608). 


How many charged particles were transferred? 

1 0
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Answer #1

The rod was initially having a charge of 19 NC and after touching the metal sphere its charge becomes 10NC.

So, electrons from sphere move to rod reducing its positive charge.

An electron has a charge of 1.6X10^-19 C, so if n number of electrons are transferred,

so 1.6X10^-19Xn = 9X10^-9

n = 5.6X10^10 = 6X10^10 Ans

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