Question

state the factors affecting the resistance of a counducting wire​

Answer 1

Answer:

1. resistance is directly proportional to length.

2. resistance is inversely proportional to area of cross section of the conductor.

3.effect of the nature of material of conductor.

4. effect of temperature.

Explanation:

4. the resistance of all pure metals increases on raising the temperature. and decreases on lowering the temperature.

Answer 2

Question

State the factors affecting the resistance of a counducting wire.

Answer:

The factors affecting the resistance of a counducting wire are-

• on its length $(l)$

• on its cross-sectional area $(A)$

• on the nature of the material

( Resistance )

$\huge\tt {R ∝ l }$

[ directly proportional to length ]

___

$\huge\tt {R ∝ \frac {1}{A} }$

[ inversely proportional to cross sectional area ]

....

$\boxed {\huge\tt R ∝ρ \frac {1}{A} }$

Where "ρ" ( rho ) is a proportionally constant known as resistivity of the material of conductor.

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