Question

A 2 v cell is connected to a 1 ohm resistor how many electron come out of the negative terminal of the cell in 2 minutes

Answer 1

Current, I=V/R

Implies , current = 2A

But I = Q/T

So 2 = n X 1.6 x10 ^-19/ 120

Since Q=ne

So n= 240/1.6 *10^-19

= 150 x 10^19 electrons.