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Which of the following statements are true with regard to resistance?

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Which of the following statements are true with regard to resistance?

(a) Resistance is directly proportional to a length of the wire

(b) Resistance is directly proportional to an area of cross section of the wire

(c) Resistance is inversely proportional to the length of the wire

(d) Resistance is inversely proportional to the resistivity of the wire

I got this question by my school principal while I was bunking the class.

The above asked question is from Resistivity topic in portion Simple DC Networks of Basic Electrical Engineering

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Correct choice is (a) Resistance is directly proportional to a length of the wire

Easy explanation: The expression for resistance is: Resistance=Resistivity*length of wire/ area of cross section of the wire. Hence resistance is directly proportional to length.

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