Home
Class 12
PHYSICS
Define resistivity of a material and dis...

Define resistivity of a material and discuss the factors on which it depends.

Text Solution

AI Generated Solution

### Step-by-Step Solution: 1. **Definition of Resistivity**: - Resistivity, denoted by the symbol \( \rho \), is defined as the resistance of a material for a unit length and unit area of cross-section. It is a measure of how strongly a material opposes the flow of electric current. 2. **Mathematical Expression**: - The resistivity can be mathematically expressed using the formula: \[ ...
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTIONS|6 Videos

  • CURRENT ELECTRICITY

    MBD -HARYANA BOARD|Exercise OBJECTIVE TYPE QUESTIONS|20 Videos

  • CURRENT ELECTRICITY

    MBD -HARYANA BOARD|Exercise OBJECTIVE TYPE QUESTIONS|20 Videos

  • BOARD QUESTION PAPER (SOLVED) - 2019

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTIONS|4 Videos

  • DUAL NATURE OF MATTER AND RADIATIONS

    MBD -HARYANA BOARD|Exercise OBJECTIVE TYPE QUESTIONS|17 Videos

Similar Questions

Explore conceptually related problems

The factors on which work depends is

List the factor on which resistivity depends.

What is terminal velocity? Discuss the factors on which it depends.

Define resistance of a conductor and its cause. Explain the factors on which its value depends. How will the resistance of a wire of metal be affected if its temperature is changed?

(a) Define resistivity. Write an expression for the resistivity of a substance. Give the meaning of each symbol which occurs in it. (b) State the SI unit of resistivity. (c) Distinguish between resistance and resistivity. (d) Name two factors on which the resistivity of a substance depends and two factors on which it does not depend. (e) The resistance of a metal wire of length 1m is 26 Omega at 20^(@)C . if the diameter of the wire is 0.3mm, what will be the resistivity of the metal at that temperature?