With a power supply able to produce 125 a of current, how long must the nails stay in the electrolysis chamber to receive 8.26×106 c of charge?

The current produced is defined as the ratio between the charge flowing in a certain part of the circuit divided by the time interval considered:

where
I is the current
Q is the charge
is the time interval

The cell in our problem produces a current of I=125 A and the charge is , so to calculate the corresponding time we can re-arrange the previous equation, and we find