Intrinsic motivation arises from internal satisfaction, while extrinsic motivation arises from external rewards that is being obsessed by external things like money, prize etc. Like a man working in a firm just continue to work without enjoying it because of external motivation which is monthly payment, not the internal satisfaction.
Difference between intrinsic and extrinsic motivation:
Motivation helps person to repeat activities for achieving something or internal peace. So there are two types of motivation here, intrinsic and extrinsic.
The motivation which helps a person to relax the mind or satisfy his desire or learning something is called intrinsic motivation. Intrinsic motivation can be doing Yoga or exercise daily for relieving stress or listening to music which keeps him happy etc. The extrinsic motivation is also the motivation which inspire the person to do some activity instead of which the person will achieve something. It can be doing exercise for weight loss or practicing singing for performing on concert etc.