GENERAL KNOWLEDGE

Detailed explanation-1: -A circuit is simply a closed loop through which charges can continuously move.

Detailed explanation-2: -Electric current is a flow of charges. We know current flows from the positive terminal to the negative terminal of a cell. The direction of flow of current is opposite to the direction of flow of electrons. Hence, in a closed circuit, electrons flow from the negative terminal to the positive terminal of a cell.

Detailed explanation-3: -In the closed circuit, the electrons have a continuous path to travel and thus current flows continuously.

Detailed explanation-4: -A closed loop control system is a mechanical or electronic device that automatically regulates a system to maintain a desired state or set point without human interaction. It uses a feedback system or sensor.