Question

what is the difference between open and closed circuit for class 7​

Answer 1

Answer:

A circuit is considered to be closed when electricity flows from an energy source to the desired endpoint (and back to the source) of the circuit. In other words, a closed circuit has a complete path for current to flow, whereas an open circuit doesn't, which means that it's not functional.

Answer 2

Answer:

A device that allows or cut the flowing of current through wire is known as circuit.

If the circuit is open then the electric current cannot be reached into the appliances . While if the circuit is close then the electric current can reached into the appliances(fan, bulb) and it started working.