Question

A 2v cell is connected to a 1ohm resister. how many electrons come out the negative terminal of the cell in 2 minute

Answer 1

According to Ohm’s law, the current in the circuit would be:

I = V/R =2/1 = 1 A

The amount of charge transferred when the current flows for 2 minutes is given as ,

Q = I*t = 2 * 2 * 60s = 240C

Total number of electrons coming out of the battery/cell would be,

n= 240 * 6.242×10^18 = 14.98 * 10^20 electrons