Voltages relative to earth, Physics

Voltages relative to earth

It is very common in electrical circuits to have an earth connection. This earth connection has no effect on potential differences across components, however it does affect the values of the potentials or voltages at points in the circuit.

2450_volatage reative to earth.png

The earth is a reference point and considered to be at zero volts. Potential differences between earth and the negative terminal of the supply result in negative voltages and potential differences between earth and the positive terminal result in positive voltages. It should be noted that due to static build up on the airframe, the earth connection (airframe) of an airborne aircraft is unlikely to be at zero potential with respect to the ground

2238_volatage reative to earth1.png

You should also note that earth connections, for example to the chassis of an equipment or the airframe of an aircraft, are often used as the current return lead in an electrical circuit.

Posted Date: 9/13/2012 3:22:28 AM | Location : United States







Related Discussions:- Voltages relative to earth, Assignment Help, Ask Question on Voltages relative to earth, Get Answer, Expert's Help, Voltages relative to earth Discussions

Write discussion on Voltages relative to earth
Your posts are moderated
Related Questions
How could you predict the spontaneity of a chemical reaction, given changes in entropy and enthalpy?

What are Newton s laws of motion? 1. A body at rest will stay at rest and one in motion will stay in motion, unless and unless acted upon by an external force. (Law of inertia)

Q.   Describes the construction of a 'Nicol Prism' and explains its action in converting UPL into PPL. Sol.     Nicol Prism: This is the most simple and elegant polarizer and

Viscosity in fluids is the analog of friction in solids. Both are methods by which the kinetic energy of moving bodies can be changed into thermal power. In the absence of friction

One of the Maxwell's e-m equations involves the curl of the electric field. Write down the equation and mention the law of electromagnetism which is shown by the equation.

All the given four Laws may be written in one relation,  PV  = nRT =m/n RT   This formula is known as deal gas equation. Where m = mass of the gas M = molecular mass of t

explain the capacitance of spherical capacitor when the inner surface is earthed

explain with the aid of a diagram what is meant by the moment of a force about point

Work is equal to which of the following? a) The cross product of force and displacement. b) The product of force times time c) Force divided by time d) The dot

Which colour has got the minimum angle of deviation?