TP 21.2

2nd Edition:

Given: I = 0.120 A    

Dt = 65.0 s

 Find: DQ - ?

I = DQ/Dt

 

DQ = I Dt = (0.120 A)(65.0 s) = 7.80 C

 

# of electrons = DQ/e = (7.80 C)/(1.60 x 10^-19 C) = 4.88 x 10¹⁹

3rd Edition:

Given: I = 0.180 A    

Dt = 78.0 s

 Find: DQ - ?

I = DQ/Dt

 

DQ = I Dt = (0.180 A)(78.0 s) = 14.0 C

 

# of electrons = DQ/e = (14.0 C)/(1.60 x 10^-19 C) = 8.78 x 10¹⁹