Q:

What is a common wire in an electrical circuit?

A:

A common wire is either a connecting wire or a type of neutral wiring, depending on the electrical circuit. When it works as a connecting wire, the wire connects at least two wires of a circuit together.

Standard wiring design in U.S. homes involves a neutral wire at the ground potential and two hot wires of 120 volts each. One of the hot wires swings negative and the other one swings positive. A transformer supplies the house and either of the two hot wires can provide electricity to the different 120-volt standard circuits that are in homes. People can combine both wires when a 240-volt circuit is necessary.


Is this answer helpful?

Similar Questions

  • Q:

    How does a switch work on a circuit?

    A:

    A switch works by interrupting current flow around an electrical circuit. A basic switch is a binary device: it is either open (off) or closed (on). The simplest type of switch is one that comprises two metal strips that are brought into contact by a spring or some other form of actuating mechanism.

    Full Answer >
    Filed Under:
  • Q:

    What is the definition of a parallel circuit?

    A:

    A parallel circuit is an electrical circuit where the current branches out and flows into more than one electrical device and then flows back together again to complete the circuit. The current will still flow through the rest of the circuit if one of the branches breaks.

    Full Answer >
    Filed Under:
  • Q:

    What is a voltmeter used for?

    A:

    A voltmeter is an instrument used to measure the voltage between two points in an electrical circuit. Some voltmeters register direct current while others measure alternating current.

    Full Answer >
    Filed Under:
  • Q:

    How does a battery work?

    A:

    According to the MIT School of Engineering, a battery provides an electrical charge due to the chemical reactions that take place inside it once it is connected into an electrical circuit. When a circuit connects the positive and negative poles, the anode and cathode inside the battery react with the electrolyte medium separating the two, producing a flow of electrons. This creates an electrical current and provides power.

    Full Answer >
    Filed Under:

Explore