Two resistors A and B have resistances R A and R B respectively with R A

Question

Two resistors A and B have resistances R A and R B respectively with R A < R B . The resistivities of their materials are ρ A and ρ B .

Philoid · Accepted Answer

Given :

Resistance of resistor A, R_A< Resistance of resistor B, R_B

Formula used : Resistance is given by the formula

Where

R is the resistance

ρ is the resistivity

l is the length

A is the area of cross section

Resistance is

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 ρ_A and ρ_B. So option D is correct.

Two resistors A and B have resistances RA and RB respectively with RA < RB. The resistivities of their materials are ρA and ρB.

Two resistors A and B have resistances R_A and R_B respectively with R_A < R_B. The resistivities of their materials are ρ_A and ρ_B.