Resistivity is equal to:

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

ρ = \frac{R}{L}

ρ = \frac{L}{R}

ρ = \frac{R \times A}{L}

None of these

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Concept: We shall go deep into the concept of resistivity and extract its formulas. We will also talk about the resistance of various materials, including alloys, conductors, and insulators.
Resistivity is a unit of measurement for a material's resistance to electrical conduction at a particular size. Although less commonly used, the phrases volume resistivity and specific electrical resistance can also be used to refer to resistance. All materials have some electrical conductivity, however some materials are more successful at it than others.
Using resistivity as a metric, you may compare how various materials allow or resist current flow. To make measurements of resistivity relevant, there exist formulae for measuring resistivity and comparing it to the resistance in Ohms for a certain size of material.
Low resistance materials that quickly conduct electrical power are called conductors. Insulators are materials that have a high electrical resistance and little electrical conductivity. Resistors and integrated circuits are only two examples of the numerous electronic parts that are dependent on the materials used in electrical wire. This is due to the fact that the resistivities of various materials vary. Therefore, we may claim that:
Resistance to conductivity, alloy corrosion, and insulator breakdown
It is a way to gauge how well a material resists the passage of electricity. Electrical resistivity, or fundamental electrical resistance, is a measurement of a material specimen. The ohmmeter is the SI unit for electrical resistance. It's often said to start with the Greek letter rho. The formula for resistivity may be found by
:

ρ = \frac{R \times A}{L}

.
Hence, the correct answer option (3) .

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th