Simulation on Ohm's Law

Assalamualaikum guys.

Today's post,let's focus on Ohm's Law.

Ohms law states that, in an electrical circuit, the current passing through a conductor between two points is directly proportional to the potential difference(i.e. voltage drop or voltage)across two points,and inversely proportional to the resistance.

Here, I found a web simulation on Ohm's Law.

We would like to invite you to surf this web.

If you wish to directly learn Ohm's Law from the simulation,

here.

http://www.livephysics.com/simulations/electronics-sim/ohms-law-simulation/

 We hope you learn and enjoy it.

Happy learn!

                                                                            A+ in Electric and Magnet,

                                                         Cucunewton.

                                                                                          



Simple Note For Lecture Class

Electric current      

i = dq/dt

Current density       

J = i/A        (A/m²)

      Drift speed           

J = (ne)v_d

Resistance             

R = V/I    , R = ρL / A

         

Resistivity             

ρ = E/J

Conductivity           

σ = 1/ρ

Ohm’s law

A given device (conductor, resistor, or any other electrical device) obeys Ohm’s law if its resistance R, as V/i, is independent of the applied potential difference V. A given material obeys Ohm’s law if its resistivity, is independent of the magnitude and direction of the applied electric field E.

A Microscopic View of Ohm’s Law

resistivity of metal , ρ = m / e2nT

Power in Electric Circuits

       P = IV = I²R = V²/R

Semiconductors are materials that have few conduction electrons but can become conductors when they are doped with other atoms that contribute free electrons.

Superconductors are materials that lose all electrical resistance at low temperatures. Recent research has discovered materials that are superconducting at surprisingly high temperatures.


written by SHAIRAH :)