GEOLOGY

Detailed explanation-1: -Electric current can only flow when there is a closed path. The flow of electrons through the filament of a bulb generates heat and light. Hence, an electric bulb glows only when the circuit is closed.

Detailed explanation-2: -Basic Circuits When the connections are made properly, the circuit will “close” and current will flow through the circuit and light the lamp. Once one of the wires is removed from the power source or a “break” is made in the flow, the circuit is now “open” and the lamp will no longer light.

Detailed explanation-3: -A closed circuit allows electrical energy (electrons) to flow and move. There are no interruptions in a closed circuit to stop the flow of power. When a circuit is complete and the current can flow, it is called a closed circuit. The current has a complete path when the switch is closed.

Detailed explanation-4: -When the switch is closed, the gap in the circuit is also closed, which creates a complete circuit. When a circuit is complete, the electricity has a complete path to flow round, so the circuit is on and the bulb lights up. So, the correct answer is closed.

Detailed explanation-5: -When the circuit switch is off, no electricity will flow and then the circuit is called an open circuit. Electricity will not flow in open circuit.