Complete question:
The torch worked for 14,400 seconds before the cells needed replacing. The current in the LED was 50 mA.
Calculate the total charge flow through the cells.
Answer:
the total charge flow through the cells is 720 C.
Explanation:
Given;
life spam of the torch cells, t = 14,400 s
current in cell, I = 50 mA = 50 x 10⁻³ A
The quantity of charge flowing through the cells is calculated as;
Q = It
Q = 50 x 10⁻³ x 14,400
Q = 720 C
Therefore, the total charge flow through the cells is 720 C.
