Q. 24.8( 4 Votes )
Two resistors A a A. ρA > ρB
B. ρA = ρB
C. ρA < ρB
D. The information is not sufficient to find the relation between ρA and ρB.
Resistance of resistor A, RA< Resistance of resistor B, RB
Formula used : Resistance is given by the formula
R is the resistance
ρ is the resistivity
l is the length
A is the area of cross section
Only the relation between resistance values of and is given. R is depends on ρ, l and With the information given we cannot conclude the relation between resistivity of the two resistors.
If information about ρ, l and A is given then we can say the relation between ρA and ρB. So option D is correct.
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