THE PROBLEM The potential difference between the two posts o

THE PROBLEM The potential difference between the two posts on a standard car battery is V-12 volts. Suppose the posts on your battery are d-31 cm apart Imagine releasing an electron from rest at the negative post so that it can travel to the positive post. How quickly is the electron traveling when it reaches the positive post? PAPER SOLUTION INTERPRET DEVELOP Deive an algebraic expression for the electron\'s final speed. If required, use m to represent the electron\'s mass. final

Solution

We will use wor energy principle to answer thi question

All the stored PE is converted to KE

So, V*q = 0.5*mv^2

So, 12*1.6*10^-19 = 0.5*(9.1*10^-31)*v^2

So, v = 2.05*10^6 m/s <------- answer