Charge can mean electricity received, as in the shock you’d feel if you put your finger in a wall socket. Charge is also what you do when you use your credit card instead of cash. Shopping can be electrifying too.
Charge has many meanings. Charge is what a cavalry does when it rushes towards enemy lines. A charge is also the cost of something. When you are “in charge,” it means that you are in command of everything. And when you are “in charge of,” it means that you have a specific responsibility. And when you are excited about something, you “get a charge out of it.” If you like power, you might get a charge out of being in charge.