15120 C is the charge deliver.
What is electric Charge?
Electric charge (q), is describe as a unit of matter that shows the extent to which it has more or fewer electrons than protons.
In simple words,
It is the amount of energy or electrons that pass from one body to another by different modes like conduction, induction etc.
The relationship between energy ,charge and potential difference is given by:
E = QV,
Where the energy transferred by the quantity of electric charge by a potential difference of V volts.
According to the question,
V =9V
Q = 4.2 A.hr
E = 4.2×3600×9 = 136080 J
Q = E/V = 136080/9
Q = 15120 C
Therefore,
15120 C is the charge on battery.
Learn more about electric charge here:
https://brainly.com/question/9194793
#SPJ2
