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

Explain electromagnetism, Electromagnetism: A temporary magnet formed b...

Electromagnetism: A temporary magnet formed by winding a coil of insulated copper wire around a piece of shift iron is known as electromagnet. When current is passed it behaves

Thermoelectric power:, The rate of modification of thermo emf with the chan...

The rate of modification of thermo emf with the change in the temperature of the hot junction is known as thermoelectric power.

Doppler effect, Doppler Effect Describing the classical Doppler Effect ...

Doppler Effect Describing the classical Doppler Effect for sound waves. The Doppler Effect is a means through that wave properties (specifically frequencies) are influenced thr

Determine average kinetic energy of each type of molecule, Determine the av...

Determine the average kinetic energy of each type of molecule? A cylinder contains a mixture of helium and argon gas in equilibrium at temperature of 149°C. (a) What is the a

What is magnetic field?, It is the area or region around the material where...

It is the area or region around the material where magnetic properties can be found is called as “magnetic field”.

Characteristic of a photodiode, a) Sketch an IV characteristic of a photodi...

a) Sketch an IV characteristic of a photodiode, showing how the curve shifts as a result of the illumination intensity incident on the device being varied. b) Indicate on the c

Projectile motion, after 1sec of projectile makes an angle of 45 with the h...

after 1sec of projectile makes an angle of 45 with the horizontal after another 1 sec travelling horizontally find magnitude of initial velocity and angle of projection

Refractive index, explain refractive index of the transparent liquid using ...

explain refractive index of the transparent liquid using prism and spectrometer?

SCALER AND VECTOR, A FORCE OF 10I-3J+6K NEWTON ACTS ON A BODY OF 5KG AND IT...

A FORCE OF 10I-3J+6K NEWTON ACTS ON A BODY OF 5KG AND IT DISPLACESFROM 6I+5J-3KMETRE TO 10I-2J+7K METRE. THE WORK DONE IS A)100J B)O C)121J D)NONE

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