Question

a glass rod rubbed with silk acquires a charge of +8*10(power -12).the number of electrons it has gained or lost is what?
I want know the answer immediately urgent!!!!!!!!!!!!!!
pls solve with all the calculation step.

Answer 1

The glass rod has aquired a +ve charge, which implies electrons were lost from it.
Now , 1electron has a charge of -1.6X10⁻¹⁹C
if the charge present is 8X10⁻¹²C
then no. of electrons lost =$\frac{total charge present }{ charge on each electron} \\ \frac{8X10 ^{-12} }{1.6X10^{-19} } \\ =5X10^{7} C$

Answer 2

Answer:

The glass rod has acquired a +ve charge, which implies electrons were lost from it.

Now, 1 electron has a charge of -1.6X10⁻¹⁹C

if the charge present is 8X10⁻¹²C

then no. of electrons lost = 8x$10^{-12}$/1.6X$10^{-19}$

=5X $10^{7}$c

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