Home
Class 12
PHYSICS
Two resistors A and B have resistances R...

Two resistors A and B have resistances `R_(A) and R_(B)`respectively with `R_(A)lt(R_(B)`.the resistivities of their materials are `(rho_A) and (rho_B)`.

A

`rho_A gt rho_B`

B

`rho_A = rho_B`

C

`rho_A lt rho_B`

D

The information is not sufficient to find the relation between `rho_A and rho_B`.

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    DISHA PUBLICATION|Exercise EXERCISE-1 Concept Builder (Topicwise) Topic 3: Combination of Resistors|10 Videos
  • CURRENT ELECTRICITY

    DISHA PUBLICATION|Exercise EXERCISE-1 Concept Builder (Topicwise) Topic 4: Kirchhoff.s Laws and Cells|7 Videos
  • CURRENT ELECTRICITY

    DISHA PUBLICATION|Exercise EXERCISE-1 Concept Builder (Topicwise) Topic 1: Electric Current, Drift of Electrons and Ohm.s Low|13 Videos
  • CONCEPT BUILDER

    DISHA PUBLICATION|Exercise Exercise-2 Concept Applicator|27 Videos
  • DUAL NATURE OF RADIATION AND MATTER

    DISHA PUBLICATION|Exercise EXERCISE -2 : CONCEPT ALLPLICATOR|30 Videos

Similar Questions

Explore conceptually related problems

If resistors of resistance R_(1) and R_(2) are connected in parallel,then resultant resistance is "

Two wires of same material and same length have radii r_1 and r_2 respectively. Compare their resistances.

The temperature coefficient of resistance for two material A and B are 0.0031^(@)C and 0.0068^(@)C^(-1) respectively .Two resistance R_(1) and R_(2) made from material A and B respectively . Have resistance of 200 Omega and 100 Omega at 0^(@)C . Show as a diagram the colour cube of a carbon resistance that would have a resistance equal to the series combination of r_(1) and R_(2) at a temperature of 100^(@)C (Neglect the ring corresponding to the tolerance of the carbon resistor)

Two resistors of resistance R_(1) and R_(2) having R_(1) gt R_(2) are connected in parallel. For equivalent resistance R, the correct statement is

A copper wire of length l and r radius r is nickel plated till its final radius is 2r. If the resistivity of the copper and nickel are rho_(c) and rho_(n) , then find the equivalent resistance of the wire.

In the, Ohm's law experiment ot find resistance of unknown resistor R, the arrangement is as shown. The resistance measured is given by R_("measured")=(V)/(i)V= voltage reading of voltmeter. i=current reading of ammeter. The ammeters and the voltmeter used are not ideal, and have resistance R_(A) and R_(V) respectively. For arrangement shown, the meausred resistance is

Two planets have radii r_(1) and 2r_(1) and densities are rho_(1) and 4rho_(1) respectively. The ratio of their acceleration due to gravities is