A TV set shoots out a beam of electrons. The beam current is 10 A. How many electrons strike the TV screen in a minute?
Step 1: Concept used
Where, is the charge, is the number of electron, is the charge on the electron ( basic unit charge) which is equal to .
Step 2: Given parameters
Step 3: Calculation
So the charge in the beam of electron for one minute is given by,
Where, is the charge, is the current, and, is the time for which the current is flowing.
Substitute the values,
As we know that we can express charge as the integral multiple of basic charge, we can write charge as,
Putting both the values of charge equal to each other :
Thus the total electrons strike the TV screen in a minute are .