Production of electricity by friction, Physics

Assignment Help:

Production of electricity :

Very large amounts of electrical energy lie dormant in the atoms of every speck of material in the universe. Whilst the atoms remain electrically balanced however, this electricity cannot be put to any practical use. What is needed is some form of external energy that will separate the electrons from their nuclei. In this way, the external energy that is applied will give rise to electrical energy.

There are six sources of external energy that are capable of separating the electrons from their nuclei, these are friction, pressure, magnetism, heat, light and chemical action.

BY FRICTION

Static electricity, that is the separation and build-up of charge is an everyday phenomenon that is often caused by friction - the physical stripping of electrons from one body and depositing on another. Early examples in science were the rubbing of a glass rod (which loses electrons and gains a positive charge) with a silk stocking! (gains electrons, receives negative charge) and the rubbing of an ebonite rod (receives negative charge) with cats fur (becomes positively charged). Everyday examples are:

• Combing the hair (dry). The comb attracts the individual hairs and the hairs repel each other and stand on end.
• Removing a shirt (especially nylon). The shirt crackles and sparks may be seen, the shirt is also attracted to the body.
• The receiving of ‘electric shock' from cars (also aircraft) when touching them on the outside. Here the charge has been produced by the friction of air passing around the vehicle.
• The rapid collection of dust by records. The dust is attracted by the charge built up on the record produced by friction of handling and playing.
• Lightning flash is a result of the build up of static electricity in clouds.
• Although not used to produce electricity for any aircraft systems, static electricity is generated by friction as the aircraft moves through the air and will therefore be considered at various points throughout the course.


Related Discussions:- Production of electricity by friction

How are solid core fibers terminated, How are solid core fibers terminated?...

How are solid core fibers terminated? The very architecture of solid core fibers creates the precise termination is a not easy operation, although it should be said that in mos

Problems regarding open organ pipes and closed organ pipes, a closed organ...

a closed organ pipe resonates with frequency 6hz and an open organ pipe resonates with frequency 12Hz. if the two organ pipes are joined to form a single organ pipe then it will re

Which has additional rotational kinetic energy, Which has additional rotati...

Which has additional rotational kinetic energy an object with a rotational inertia of 4 kg·m 2 and an angular velocity of 8 rad/s or else an object with a rotational inertia of 8

Electric charge, What is electric field and formula for electric field is?

What is electric field and formula for electric field is?

Measure the percentage change in its resistance, A cylindrical metallic wir...

A cylindrical metallic wire is stretched to enhance its length by 5%. Measure the percentage change in its resistance.

Explain motion of simple pendulum, Motion of simple pendulum. Simple Ha...

Motion of simple pendulum. Simple Harmonic Motion:  It is a type of vibratory motion in which body has an immediate acceleration whose magnitude is directly proportional to the

Draw a circuit diagram of a common emitter amplifier, Draw a circuit diagra...

Draw a circuit diagram of a common emitter amplifier by using n-p-n transistor. Show input and output voltages graphically. The current gain for common emitter amplifier is 59.

What are the steps to the scientific notation, What are the steps to the sc...

What are the steps to the scientific notation? To write in scientific notation, you should first move the decimal point of the number to where the number is among 1 and 9. For

Cph theory is able explain the universe future, if CPH has mass, so CPH The...

if CPH has mass, so CPH Theory is able explain the universe future. Universe should collapse. And it is able explain dark matter too. Am I wrong? Answer; you are correct that C

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd