A closed circuit allows current to flow, but an open circuit leaves electrons stranded. For instance, a simple light switch opens and closes the circuit that connects a light to a power source. When you build a circuit, it’s a good idea to disconnect the battery or other power source when the circuit is not in use.

What is Closed Circuit? In a closed circuit, the electric current (charged particles) flows from an active energy source to the connected load or other components due to the closed-loop path.

An electric circuit is a “closed circuit” if it contains a complete path between the positive and negative terminals of its power source. …

Every electric circuit, regardless of where it is or how large or small it is, has four basic parts: an energy source (AC or DC), a conductor (wire), an electrical load (device), and at least one controller (switch).

Electric circuits An electric circuit has three parts: An energy source – like a battery or mains power. An energy receiver – like a lightbulb. An energy pathway – like a wire.

: an electrical circuit in which the continuity is broken so that current does not flow.

A basic electrical circuit consists of three main components, a source of voltage, a load, and conductors. This circuit consists of a battery as the source of electrical energy, a lamp as the electrical load, and two wires as the conductors connecting the battery to the lamp.

What You Do:

1. Disconnect one of the wires from the battery pack. Connect one end of the new wire to the battery.
2. You have made an open circuit and the bulb should not light up. Next you will test objects to see if they are conductors or insulators.
3. Connect the ends of the free wires to an object and see what happens.

An electrical circuit is composed of a source of electrical power, two wires that can carry electric current, and a light bulb. One end of both the wires is attached to the terminal of a cell while their free ends are connected to the light bulb. The electrical circuit is broken when the bulb is switched off.

Materials that do not let current flow easily are called insulators. Most nonmetal materials such as plastic, wood and rubber are insulators.

Metals contain free moving delocalized electrons when electric voltage is applied and electric fields in the metal trigger the movement of the electrons making them shipped from one end and other end of the conductor electrons will move towards the positive side. Thus, the metals become a good conductor of electricity.