insulated wire connectors

In an electric circuit a short - circuit occurs whenever the live wire and the neutral wire come in direct contact. The wires touch may each other due to faulty connection or sometimes due to the wearing off the insulation. This condition leads to overheatin..

A solenoid is a long coil (shaped like a cylinder) containing a large number of close turns of insulated copper wire..

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 ins..

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 insulatio..

A D.C. motor consists of a rectangular coil made of insulated copper wire wound on a soft iron core. This coil wound on the soft iron core forms the armature. The coil is mounted on an axle and is placed between the cylindrical concave poles of a magne..

A commutator is used to reverse the direction of flow of current. Commutator is a copper ring split into two parts C 1 and C 2 . The split rings are insulated form each other and mounted on the axle of the motor. The two ends of the coil are soldered to these rings. They rotate along wi..

Domestic Electric Circuits - Electric power is usually generated at places which are far away from the places where it is consumed. At the generating station, the electric power is generated at 11,000 volts. This voltage alternates at a frequency of 50 Hz. The power is transmitted over long distanc..

The heating effect of current is utilised in the electrical heating appliances such as electric iron, room heaters, water heaters, etc. All these heating appliances contain coils of high resistance wire made of nichrome alloy. When these appliances are connected to power supply by i..

In the previous section we saw how a body is charged by friction . Let us now see how we can charge a metallic sphere by induction. Fig (a) shows an uncharged metallic sphere supported on an insulating rod. A charged plastic rod is brought close to the sphere. Free electrons in the sphere..

An electric current produces a magnetic field A magnetic field exists in the region surrounding a magnet, in which the force of the magnet can be detected Field lines are used to represent a magnetic field The magnetic field lines of a straight current are circular with centres on the ..