Question

What is ohm's law? derive a equation and define 1 ohm....! ✌​

Answer 1

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Ohm's law state that potential difference is directly proportional to current passing through conductor ___

There graph is always constant __

i.e $\tt{ V = I R }$

where R is constant of proportionality and is called resistance ____ ✨✨✨

Plzzz Refer to attachment ____ ☺️☺️

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Answer 2

Answer: Ohm's law is a law that states that the voltage across a resistor is directly proportional to the current flowing through the resistance.

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Volume of conductor = A.l

Total number of free electrons = A.l .n

Total free charge, Q = A.l .n.e

Time taken by a free electron to cross the conductor of length l ,

t= l/v.

Current I = Q/t = (A.l .n.e)/ (l/v) = n.e.A.v —————(1)

v = μ. E and

μ = e.τ/m. & E = V/l.

v = e.V.τ/(m.l);

V= v.m.l/(e.τ);

I = n.e.A.v

V/I = m.l/(n.A.τ. e^2) = R(Resistance)

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V = IR