Question

derivation of ohms law description

Answer 1

Ohm's Law:

When physical conditions remains the same, potential difference across the ends of the conductor is directly proportional to the current passing through it.

V directly proportional to I

V= IR, where 'R' is a constant called resistance.

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Answer 2

$\huge\red{ANSWER}$

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OHM'S LAW :-

It states that the current passing through a substance is directly proportional to the applied voltage .

$\huge\red{MATHEMATICALLY }$

V directly proportional to I

V=IR

Here R is proportionality constant and it is called resistance

$\huge\red{RESISTANCE }$

Resistance is the opposition offered to the flow os current by a substance .

It is inversely proportional to cross section area of wire and directly proportional to length if wire

R=rho L/A

It means that if length of wire increase then resistance increase and if thickness or cross section area of wire increase then resistance decrease .

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