Here is the problem which I am struggling on, please help me!
Problem: When a 9.0 V battery is connected to a capacitor, it puts 6.80e-4 C of charge on the capacitor. When a different battery with an unknown voltage is connected to the same capacitor, it puts 1.5 × 104 C of charge on the capacitor.
A- What is the unknown battery's voltage?
I need experts help to solve the above question.