Movement of charge, Physics

Assignment Help:

MOVEMENT OF CHARGE:

Although electric current is referred to as the flow of electrons through a conductor, it should be noted that more exactly, any movement of electric charge constitutes an electric current. Thus, passage of electricity may occur through a:

• conductor such as metal, due to the movement of the loosely held outer electrons of the atoms.
• vacuum or gas, due to the movement of electrons.
• gas, due to the movement of the ionised gas molecules.
• liquid, due to the ionisation of certain molecules, particularly those of acids and salts in solution (e.g. Electrolytes).

The ampere may be defined in terms of the mechanical units of force and length, a more helpful picture is that of moving electrons. When a current of one ampere is flowing in a conductor, one coulomb of charge passes any point in the conductor every second.

The ampere is thus a measure if the rate of flow of electrons.

 


Related Discussions:- Movement of charge

Free electron theory and band theory of solids, Q. What is the dissimilarit...

Q. What is the dissimilarity between Free Electron Theory and Band Theory of solids? Answer:- The Free Electron Theory This theory notifies that metals conduct electric

SHM, composition of two simple harmonic motions at right angles to each oth...

composition of two simple harmonic motions at right angles to each other and having time periods in the ratio 1:2

Universal constant of gravitation, Universal constant of gravitation; G: ...

Universal constant of gravitation; G: The constant of proportionality in Newton's law of universal gravitation & which plays an vital role in A. Einstein's general relativity.

What is shiro mass, Logan, whose mass is 18 kg, sits 1.20 m from the center...

Logan, whose mass is 18 kg, sits 1.20 m from the center of a seesaw. If Shiro must sit 0.80 m from the center to balance Logan, what is Shiro's mass?

Determine the maximum value of magnetic intensity, The maximum value of ele...

The maximum value of electric field in an electromagnetic wave is 800V/m. Determine the maximum value of magnetic intensity and the average value of pointing vector.

Finding the displacement and time, A car of mass 1600 kilograms (kg) was tr...

A car of mass 1600 kilograms (kg) was travelling at 30m/s when the brakes were applied and produced a constant retarding force of 8000 N (Newtons) to the car: Find - a) How far the

Will a dc motor actually produce voltage, Will a DC motor actually produce ...

Will a DC motor actually produce voltage if it is spun in reverse? It'll make voltage if you spin it forwards, too. The only difference among a DC motor and a DC generator is w

What are the safety terms to be inspected on battery, What are the safety t...

What are the safety terms to be inspected on battery? Ans: Safety terms to be checked on battery are full complements of battery box fixing bolts and its tightness, observat

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