electrical wiring diagrams

The figure shows the ring system of electric wiring. Wiring starts from the main fuse - box, run around all the main rooms of the house and then come back to the fuse box agai..

The direction of the magnetic field due to a current may be studied by drawing the magnetic lines of force. A vertical wire AB is passed through a horizontal cardboard PQRS. Ion filings are sprinkled on the cardboard. Current is passed through it by connecting a battery to it. Iron filing..

A current is any motion of charge from one region to another. The illustration below shows two bodies at different potentials. When these are connected with a wire, free electrons flow from B to A until both bodies attain the same potential, after which the current ceases to flow. C..

Electric Fuse - An electric fuse is a device which is used to limit the current in an electric circuit. The fuse safeguards the circuit and the electrical appliances from being damaged. The fuse wire is generally an alloy of lead and tin. It has a l..

Electric Power - The power is the rate of doing work or in other words, it is the work done in one second. If a current of 'I' amperes flow through a conductor of resistance 'R' ohm for a time 't' seconds when the potential difference across its ends is 'V' volt, then the electric..

'. 1 watt = Thus if a potential difference of 1 volt causes a current of 1 ampere to flow through a wire, the electric power consumed by the wire is 1 watt. The SI unit of electric power is watt (W). It is the power consumed by a device that carries 1 A of cu..

A current is any motion of charge from one region to another. The illustration below shows two bodies at different potentials. When these are connected with a wire, free electrons flow from B to A until both bodies attain the same potential, after which the current ceases to flow. Current..

Two electric poles are connected by electric wires in a street. The height of the first pole is 24 ft. It casts a shadow of 12 ft. The second pole casts a shadow of 8 ft. Find the height of the second pole. => 12 ft or 8 ft or 16 ft or 24 ft..

Usually an electric appliance such as a heater, an iron, etc. are fitted with all the 3 wires namely live, neutral and earth. The earth wire is connected to the metallic body of the appliance. This is done to avoid accidental shock. Suppose due to some defect, the insu..

To avoid the risk of electric shocks, the metal of an electrical appliance is 'earthed'. Earthed means to connect the metal case of the appliance to the earth (at zero potential) by means of a metal wire (copper) called the earth wire. One end of the earth h..