Question

2.3. State the factors that alter the resistance of a conductor. write the mathematical expression ​

Answer 1

Step-by-step explanation:

${ \huge \fbox \pink {A}\fbox \blue {n} \fbox \purple {s} \fbox \green{w} \fbox \red {e} \fbox \orange {r}}$

The resistance (R) of a conductor of length l and area of cross section (A) is given by

${\mathtt{R = P( \frac{1}{A} )}}$

With the change in length and area of the conductor the resistance changes.

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Answer 2

Answer:

The resistance (R) of a conductor of length l and area of cross section (A) is given by

R = P [1/a]

With the change in length and area of the conductor the resistance changes

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