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?

F=ma.., write a program about f=ma

write a program about f=ma

Chlorine atom differs from chloride ion in the number of, Chlorine atom dif...

Chlorine atom differs from chloride ion in the number of: (1) Proton          (2) Neutron   (3) Electrons              (4) Protons and electrons Ans: Electrons

Find angular velocitie and total acceleration vecto, Krusty the Clown and S...

Krusty the Clown and Sideshow Bob have covered themselves in velcro, and shot themselves out of a large cannon so that they stick to a huge rotating velcro wheel (don't try this at

Measure thickness of thin silicon-chip by bi-prismexperiment, Q.   How will...

Q.   How will you measure thickness of thin silicon-chip using Bi-prism experiment? Derive the formula used. When a thin silicon chip, thin film of soap bubble etc. is introduc

Which of the two objects will start to slide first, Two objects are placed ...

Two objects are placed on a flat turntable at 10.0 cm and 20.0 cm from the center, respectively. The coefficient of static friction with the turntable is 0.50. The turntable's

Deriving the relativity of simultaneity, Deriving the Relativity of Simulta...

Deriving the Relativity of Simultaneity Animation in which shows how the relative nature of the simultaneity of two events must follow from the existence of length contraction.

Ocean currents, How can we use the ocean current data? I am having some nea...

How can we use the ocean current data? I am having some nearshore current data, what things can be derived from this data?

Determine the component of the force, Water flows through a right angle val...

Water flows through a right angle valve at the rate of 1000 lbm/s as shown in the figure. The pressure just upstream of the valve is 90 psi and the pressure drop across the valve i

Explain three series-connected resistors, A 12V battery is connected in a c...

A 12V battery is connected in a circuit having three series-connected resistors having resistances of 4 Ω,9 Ω and 11 Ω. Verify the current flowing through and the p.d. acr

Explain longitudinal waves, Longitudinal Waves: The traveling waves in ...

Longitudinal Waves: The traveling waves in which particles of the elastic medium vibrate about back and forth along the direction of propagation of waves are called longitudina

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