earth neutral neutral line earth line how much voltage in electric socket when measured with multimeter

The Earth's Magnetism - A magnetic compass was used to help the sailors for navigational purpose. But recently it has been discovered that some migrant birds have magnetic sensors in their heads, which help to guide them using the Earth's magnetic field. William Gilbert suggeste..

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 ..

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..

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 dist..

Let the object O be viewed with our eyes which is at a distance of r, making an angle q between the two eyes as shown in the diagram. The angle q , caused by the two lines drawn from the position of the two eyes to the object, is called angle of parallax. If we can consider OA a..

Fuse Arrangement The fuse is a short piece of wire made of a material of high resistance and of low melting point so that it may easily melt due to overheating when excessive current passes through it. Generally an alloy of lead and tin is used as fuse wire. The fuse wire 'F' is stretched betwe..

The electric power line enters our house through three wires. One is called the earth wire or ground wire. This carries no electricity. The earth wire is connected to a large metal plate buried deep in the ground. The remaining two wires carry ..

Like magnetic poles repel and unlike magnetic poles attract. Soft iron gains and loses magnetism faster than steel. A magnetic field is a region in which a magnetic force may be detected. Magnetic field can be plotted with the help of a compass needle. A magnetic field line ..

The development of the laser has opened many avenues of investigation and improved many others. The important characteristics that have contributed to its usefulness in these many areas are tile coherence, monochromaticity and great intensity of its radiation. (i) The smallest lasers used for telep..

between a source of light and an observer, the apparent frequency of light received by the observer is different from the frequency of light emitted from the source of light. The apparent frequency f 1 is given by: where v is the velocity of the star and c is the velocity of light in vacuum. f is t..