Question

. The torch worked for 14 400 seconds before the cells needed replacing. The current in the LED was 50 mA.

Answer 1

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.