Physics, asked by firdousuzma626, 1 year ago

How does a resistance of a conductor depend on its length and cross sectional area?

Answers

Answered by angel600
6
R is directly proportional on conductor's length..

If L increases then R will also increase and if L decreases then R also decreases..

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R is inversely proportional to its A (area of cross section)

If A increase then R decreases and if A decrease then R increases...

so, this is how resistance of a conductor depends on its length and cross section area..

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Answered by SillySam
9
\textbf{Resistance of a conductor depends} \\ \textbf{ upon}:-

1) \textbf{Length }:- The resistance of a conductor is directly proportional to the length. If the length increases, resistance increases and vice-versa.

2)\textbf{ Area of cross section}:- The resistance of a conductor in shape of wire is indirectly proportional to the area of Cross section. A thick wire has less resistance as its area of cross section is more.

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Resistance = ρ l/A

Where ρ is a constant for given temperature and is known as resistance. 'l' is the length and 'A' is the area of cross section.

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Resistance also depends upon the \bf{temperature} and the \bf{nature \:of \:the\: conductor.}

For example :- Copper has less resistance than manganese.

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\huge{\bf{Hope\:It\:helps}}

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