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?

Tangent law, State two conditions which must be satisfied in order to apply...

State two conditions which must be satisfied in order to apply tangent law in magnetism

Hall effect, Hall Effect may be used for which of the following? (A) D...

Hall Effect may be used for which of the following? (A) Determining whether the semiconductor is p or n type. (B) Determining the carrier concentration. (C) Calculat

By which law the force acting between two point charges, The force acting b...

The force acting between two point charges can be computed using which of the following laws? a) Ohm's Law b) Ampere's Law c) Coulomb's Law d) Newton's Second L

Why do you not collapse in the pressure, Q. Why do you not collapse in the ...

Q. Why do you not collapse in the pressure created by the atmosphere? Answer:- If the outward pressure inside your body weren't equal to the pressure pressing in on you an

Evaluate the tension in the rope, Evaluate the tension in the rope A m...

Evaluate the tension in the rope A muscle builder holds the ends of a masslessrope. At the center of the rope, a 15kg ball is hung. What is the tension in the rope if the angl

Light is able to travel through vacuum, Light is able to travel through vac...

Light is able to travel through vacuum Ans: In classical physics electromagnetic radiation (light) is the only kind of wave that doesn't need a medium. For sound rays in a

OPTICS, How do I make a terrestrial telescope?

How do I make a terrestrial telescope?

Nuclear physics: rutherford's alpha-scattering , Rutherford's alpha-scatter...

Rutherford's alpha-scattering experiment recognized that the mass of atom is concentrated with small positively charged region at the centre which is known as 'nucleus'. Nuclei

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