A current of 0.25A flows steadily through a conductor from point A to point B. Answer the following:
(i) Calculate the total charge that passes a cross-section in 20min.
(ii) If this charge consists solely of electrons, estimate the number of electrons that cross the section in this time. (Take elementary charge e=1.6×10−19C.)
(iii) State the sign (positive or negative) of the charge transferred and give a brief reason.
b. (ii) Estimate the number of electrons that cross the section in this time. (Take e=1.6×10−19C.)