English
Karnataka Board PUCPUC Science 2nd PUC Class 12

Choose the correct alternative: The resistivity of a typical insulator (e.g., amber) is greater than that of a metal by a factor of the order of (1022/1023). - Physics

Advertisements
Advertisements

Question

Choose the correct alternative:

The resistivity of a typical insulator (e.g., amber) is greater than that of a metal by a factor of the order of (1022/1023).

One Line Answer
Advertisements

Solution

The resistivity of a typical insulator (e.g., amber) is greater than that of a metal by a factor of the order of 1022.

shaalaa.com
  Is there an error in this question or solution?

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

A negligibly small current is passed through a wire of length 15 m and uniform cross-section 6.0 × 10−7 m2, and its resistance is measured to be 5.0 Ω. What is the resistivity of the material at the temperature of the experiment?


Choose the correct alternative:

Alloys of metals usually have (greater/less) resistivity than that of their constituent metals.


A heating element is marked 210 V, 630 W. What is the value of the current drawn by the element when connected to a 210 V dc source?


A heating element is marked 210 V, 630 W. Find the resistance of the element when connected to a 210 V dc source.


Plot a graph showing the variation of stopping potential with the frequency of incident radiation for two different photosensitive materials having work functions W1 and W2 (W1 > W2). On what factors does the (i) slope and (ii) intercept of the lines depend?


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


A wire of length 1 m and radius 0.1 mm has a resistance of 100 Ω. Find the resistivity of the material.


A uniform wire of resistance 100 Ω is melted and recast as a wire whose length is double that of the original. What would be the resistance of the wire?


What length of a copper wire of cross-sectional area 0.01 mm2 will be needed to prepare a resistance of 1 kΩ? Resistivity of copper = 1.7 × 10–8 Ωm


The electrochemical equivalent of a material depends on _______________ .


How does the resistivity of a semiconductor change with rise of temperature ? Explain.


If R1 and R2 are filament resistances of a 200 W and a 100 W bulb respectively, designed to operate on the same voltage, then:


Choose the correct alternative:

The resistivity of the alloy manganin is nearly independent of/increases rapidly with increase of temperature.


A strip of copper and another of germanium are cooled from room temperature to 80 K. The resistance of ______.

Nichrome or Manganin is widely used in wire bound standard resistors because of their ______.

If the last band on the carbon resistor is absent, then the tolerance is ______


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×