Thursday, 21 September 2017

Ohms law

#Channel1

It deals with Voltage and Current in an ideal conductor(called ohmic or linear). This relationship states that the potential difference across an ideal conductor is propotional to the current through it. i.e when potential is applied , a current will be there and it comes in propotional rate.
Ohm's law is given by, V=I.R
R = Resistance (constant of propotionality)
for some work, if g is the conductance of a material
g=1/R, In this form, I=g.V
#ohmic or #linear- material that obeys ohm's law is called ohmic or linear because potential difference across it varies linearly with current.
V=W/q
(In a circuit there is 1 volt difference from a to b i.e. equal to a gain of 1 joule for 1 coulomb of charge moved from a to b)

I= is the flow of electrical charge and is a way to count the charge that cross a section every second.
I=dq/dt,
So,now, ohm's law states that if R is small than is like going in vacation following a large highway. A lot of charge will move very fast even if energy gain is little. In the other hand, If resistance is big than is like going in vacation following a small road, not many charge will move not very fast even if the energy gain is constant.

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