what is current?, Physics

Assignment Help:

A simple electric circuit, where current is represented by the letter i. The relationship among the voltage (V), resistance (R), and current (I) is V=IR; this is called as Ohm''s Law.

An electric current is a flow of electric charge by an electrical conductor. Electric charge flows when there is voltage present across a conductor.
In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons like as in a plasma.

The SI unit for measuring an electric current is the ampere, which is the flow of electric charges by a surface at the rate of one coulomb per second. Electric current can be measured by using an ammeter.
Electric currents cause many effects, notably heating, but also induce magnetic fields, which are widely used for inductors, motors, and generators.


Related Discussions:- what is current?

Maxwell-ampere-s-law-2-quation, Maxwell''s equations are a set of partial d...

Maxwell''s equations are a set of partial differential equations that, together with the Lorentz force law, form the foundation of classical electrodynamics, electric circuits and

What is eclipses, What is Eclipses? Sun is a luminous body while earth ...

What is Eclipses? Sun is a luminous body while earth and moon are non-luminous bodies. Only those parts of moon on the light of sun falls is visible. Also sun is larger than, b

Evaluate types of charge, Questions: A neutral hollow metal ball is on ...

Questions: A neutral hollow metal ball is on the end of a glass rod consequently that one can move it around easily without touching the ball. A rubber rod is chafed with rabbi

Michealson interferometer, describe the principle, construction and working...

describe the principle, construction and working of Michelson Interferometer.

Is stone take longer for the downward motion, Is stone take longer for the ...

Is stone take longer for the downward motion than for the upward motion Consider a stone thrown vertically upward. if we take friction against air into account, we see that the

Standard quantum limit, Standard quantum limit: The restriction impose...

Standard quantum limit: The restriction imposed on standard methods of measurement through the uncertainty principle inside quantum mechanics.

#title. entopy., what is entropy and how is it useful in our everyday life?...

what is entropy and how is it useful in our everyday life?

What is intrinsic semiconductor, A pure semiconductor is known as intrinsic...

A pure semiconductor is known as intrinsic semiconductor. It has thermally formed current carriers (i)  They have four electrons in the outer part of orbit of atom and atoms are

Searle''s apparatus, why metallic frame used in searles apparatus

why metallic frame used in searles apparatus

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