You need a circuit, or a path, for the electricity to move on. The circuit needs to ultimately be a giant circle, leading from the power source, around the circuit, and back to the power source. The electrons move out of the power source and on the circuit, creating current electricity.

You need a closed path, or closed circuit, to get electric current to flow. If there’s a break anywhere in the path, you have an open circuit, and the current stops flowing — and the metal atoms in the wire quickly settle down to a peaceful, electrically neutral existence.

Electrons are flowing through the wires in a closed circuit.

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

A closed circuit has a complete path for current to flow. This can happen when two bare wires in a circuit touch each other. The part of the circuit bypassed by the short circuit ceases to function, and a large amount of current could start to flow. This can generate a lot of heat in the wires and cause a fire.

A short circuit is, for instance, connecting a wire directly between the poles of a battery or power supply. Whereas a closed circuit is just a “normal” load between the poles.

Answer. The answer is plastic rope am i right!

Flow of current in a circuit: As soon as the path from one terminal of electric cell to the other is completed, an electric current starts flowing through the circuit and the bulb lights up. The electric current flows from the positive terminal of the electric cell to its negative terminal.

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.

Answer: No. Air is an insulator and does not conduct electricity.

an open circuit means that there is a gap in between somewhere in the circuit.so, the electricity does not flow and appliances do not work. because air is not a conductor and the bothe sides should be connected.

Bismuth is the diamagnetic of all metals and therefore the thermal conductivity is lower than any metal except mercury. …

In electrical engineering, a switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit, interrupting the electric current or diverting it from one conductor to another.

In its working, the main difference between them is the number of contacts they each have. The one-way switch has two contacts and the two-way switch has three contacts. The advantage of a two-way switch is the ability to control a single device from two separate locations.

Learn the Different Types of Switches

• Pushbutton Switches. Pushbutton switches are two-position devices actuated with a button that is pressed and released.
• Selector Switches.
• Joystick Switches.
• Limit Switches.
• Proximity Switches.
• Speed Switches.
• Pressure Switches.
• Temperature Switches.

The junction box serves as the communal meeting spot for electrical wires, where they connect before moving on. These boxes protect hot (black), white (neutral), and grounding (green or copper) electrical wires and may contain some other wire colors for secondary functions and lighting.

They’re actually required by the National Electrical Code when making a wire connection. When you repair a cut in an electrical cable or splice electrical wires together, you need a junction box to protect the connections. Using a junction box also protects you from electrical shock and your home from electrical fires.

Junction boxes must be installed where they are always accessible; never install a junction box in a concealed wall or ceiling space where the box cannot be accessed in the future. Junction boxes also must be covered with solid covers with no holes.

Terminal box is used for specific connections, no space for future expansion or does not require expansion of connections in future. On the other hand, junction box is with minimum specific size, plenty of woking space. Future expansion can also be planned for new connections.

In general, he recommends plastic boxes for switches and receptacles and metal boxes for light fixtures. Metal boxes are required when the existing wiring in the home is metal clad cable and must be bonded to the ground wire.

The manufacturer must have marked the outlet box system to indicate that it is acceptable for ceiling fan installations. If the original box is not listed for this purpose, it must be retrofitted and attached securely to the building structure.

Installing the Box Behind the Drywall The box must be fitted properly so it’s flush with the drywall. Otherwise, combustible materials—like wood—are exposed to potential sparks. If the junction box is recessed too far into the wall, correct the problems with an inexpensive box extension.

The front edge of the box must be flush with the finished wall surface, usually 1/2-inch-thick drywall. Some boxes have depth gauges. You can use a scrap of drywall to position the box.

There is no ambiguity about surrounding a junction box in the wall or ceiling with fiberglass insulation: It’s allowed as long as the box doesn’t contain a heat source. As a matter of fact, stuffing insulation around junction boxes is desirable. It inhibits air exchange and improves the building’s insulation.

Anyway, the first subject is a bit touchy because it makes it difficult to perform an inspection when all of the wires coming into the panel are 12 but many of the circuits have 14 in them too. There is nothing against code mixing wire size for these circuits as long as the OCPD matches the smallest wire.

If you’re wiring a circuit on which there are both lights and outlets, or you just aren’t sure which wire gauge to use, you can’t go wrong by choosing a 12-gauge wire. It’s not quite as flexible as a 14-gauge wire, and it costs a bit more, but it’s always a safe choice on a 15- or 20-amp circuit.

If the incorrect size is used, your amplifier will not receive the proper voltage that it needs to perform at it’s capability. This means the sound quality of your system will be compromised.

As an example, for a 120-volt circuit, you can run up to 50 feet of 14 AWG cable without exceeding 3 percent voltage drop….How far can you run a 14 gauge wire?