What is the difference between a bike and an electric bike

An electric bike is very similar to a traditional bike with a few additional components. 
They have a similar style of wheels, handlebars, and frame style as a regular bike. In addition, they have an electric motor, battery, and controller for the user. The battery powers the motors which offer assistance while pedaling. An e-bike does not change the pedaling action, it just makes it feel simpler.