This is just how hard the peas hit. Same principle as getting hit with a water hose. Electrical power is measured in watts. This is defined as work. This is resistance and it is measured in ohms.
Heat deteriorates insulation.
A pack of peas will cram itself into a pipe until the resistance to movement they create by rubbing uses up all their available speed. Volts divided by Ohms. This is known as Ohms Law and is the basis of all electronics. Use this information to amaze your friends. You now understand electricity.