Question

give household electric circuit and write its advantage

Answer 1

The electric charge which flows into your house through your electric circuitscarries with it useful energy which you can use for a variety of tasks. The US standard household circuit has aneffective voltage of about 120 volts, andvoltage represents energy per unit charge. 120 volts means 120 joules of energy transported by each coulomb of charge. A coulomb of charge is the amount of charge carried through a wire per second if an electric current of one ampere is flowing. So if you are operating an appliance with one ampere of current suppied at a voltage of 120 volts, you are using electric energy at the rate of 120 joules/second, or 120 watts of electric power.

When you turn on an electric appliance, you allow the 120 volts to force electric current through the appliance,analogous to using pressure from a pump to force water through a pipe. The energy which is carried by the charge is used by transforming it to accomplish heating, lighting, mechanical work (motors), etc. In the process, as the charge progresses through the appliance, its voltage drops from 120 volts to essentially zero volts with respect to the earth. This spent charge is then dumped to the earth through the ground wire. In the standard US receptacle, the charge at about zero volts is carried back to the electrical panel through the neutral wire and then transported to the earth by the ground wire attached to the electrical panel.

Answer 2

Explanation:

In a house, there are many electrical appliances that have to run independent of each other. If one appliance is turned on or off it should not affect the other appliances. This is not possible if all the appliances were connected in a series arrangement as there would be one switch that either switches all of them on or off.

When appliances are connected in a parallel arrangement, each of them can be put on and off independently. This is a feature that is essential in a house's wiring.

Also, if the appliances were wired in series, the potential difference across each appliance would vary depending on the resistance of the appliance. This would make it very difficult to provide the right power to flow through the appliances. When house wiring is done in parallel this problem does not arise as the potential difference across each appliance is the same and equal to the potential difference being provided by the power company.