Which of the following statements are TRUE with regard to resistance? A) Resistance is directly proportional to an area of cross section of the wire B) Resistance is inversely proportional to the resistivity of the wire C) Resistance is inversely proportional to the length of the wire D) Resistance is directly proportional to a length of the wire

Ashlynn Hale

Ashlynn Hale

Answered question

2022-08-11

Which of the following statements are TRUE with regard to resistance? A) Resistance is directly proportional to an area of cross section of the wire B) Resistance is inversely proportional to the resistivity of the wire C) Resistance is inversely proportional to the length of the wire D) Resistance is directly proportional to a length of the wire

Answer & Explanation

raffatoaq

raffatoaq

Beginner2022-08-12Added 22 answers

Answer:- (D) Resistance is directly proportional to a length of the wire is true.
We know that
R = p(l /A)
Where
R = Resistance of a wire
p = Resistivity
l = length of a wire
A = Area of cross section of the wire
(a) Resistance is directly proportional to area of cross section is false.
Resistance is inversely proportional to area of cross section is true.
(b) Resistance is inversely proportional to Resistivity of a wire is false.
Resistance is directly proportional to Resistivity of a wire is true.
c) Resistance is inversely proportional to length of the wire is false.
Resistance is directly proportional to length of the wire is true.

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