Question

"The resistance of any conductor is directly proportional to length and inversely proportional to area of cross-section of the substance" from this is concluded that ____________.
P: Value of resistance increases with increase in the length of conductor.
Q: Value of resistance decreases with increases in the length of conductor.
R: Value of resistance decreases with increase in the area of cross-section.
S: Value of resistance decreases with decrease in area of cross-section.

• A. Statements Q and S are true
• B. Statements P and S are true
• C. Statements P and R are true
• D. Statements Q and R are true

Answer 1

The correct option is C Statements P and R are true

As value of resistance(R) is directly proportional to length of resistance, so by increasing the length of resistance the value of resistance increases.

Statement P is correct

As value of resistance is inversely proportional to area so by increasing the area the value of resistance decreases.

So statement R is also correct.

Option c is correct answer based on above conclusions.