You can learn more about Parallel Circuits here:
All of you know that in our homes, every appliance has its own switch. But, did you know that if they were all connected as series circuit, the moment you would have switched off a lamp, all appliances would get switched off. Do you know why? So, the concept of Parallel Circuits is extremely useful in such cases which allows every appliance to work independently of any other appliance. Watch this Gyan Lab Video Tutorial to know more and understand Parallel Circuits better.