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?

Factors affecting induced emf, FACTORS AFFECTING INDUCED EMF By experim...

FACTORS AFFECTING INDUCED EMF By experiment, the following factors may be noted: • The faster the magnet (or coil) is moved, the greater is the deflection obtained on the meter

Elasticity, a mild steel wire of length 1mand cross sectional area 0./10^2 ...

a mild steel wire of length 1mand cross sectional area 0./10^2 cm^2 is stretched. within the elastic limit horizontally between two pillars. a mass of 100g is suspended from the mi

Factors affecting capacitance, Factors affecting capacitance: The facto...

Factors affecting capacitance: The factors which affect the capacitance of a parallel-plate capacitor are: Overlapping area of the plates (A). The capacitance increases

Luxon, luxon: A particle which solely travels at c (the speed of light...

luxon: A particle which solely travels at c (the speed of light in vacuum). All of the luxons have a rest mass of zero exactly. Though they are massless, luxons carry momentum

Illustrate the phasor diagram for an ideal transformer, Draw the phasor dia...

Draw the phasor diagram for an ideal transformer on no-load. (a) A 500 V/100V, single-phase transformer takes a full load primary current of 4A. Neglecting losses, Verify

Construction and working of nicol prism, Briefly explain with principle, th...

Briefly explain with principle, the construction and working of Nicol prism. Why the angle of incidence on Nicol prism would be around 14 o .

Can you give the condition for dispersion without deviation, Can you give t...

Can you give the condition for dispersion without deviation and illustrate colour has got the maximum angle of deviation?

Schrodinger Equation, For what purpose do we use Schrodinger equation in ou...

For what purpose do we use Schrodinger equation in our daily life?

Define perfectly elastic body, A body which gets its real configuration imm...

A body which gets its real configuration immediately and completely after the removal of deforming force from it, is called as perfectly elastic body. Phosphor bronze and quartz ar

Condition for diffraction, Why diffraction can't occur if slit width is les...

Why diffraction can't occur if slit width is less than the wavelength of the light? Can you explain?

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