No products in the cart.

On what factor the resistance of …

CBSE, JEE, NEET, CUET

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

On what factor the resistance of conductor depends give it's mathematical expression.give the SI unit of resistivity? Calculate the resistivity of a metal of length 2m at 20 degree Celsius having the resistance of 20W and diameter 0.3mm?

Posted by Pooja Kumari ?????? 5 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 9 months ago

Factors on which the Resistance of a Conductor Depends:

The resistance of a conductor is directly proportional to its length (l) and inversely proportional to its area of cross section (A).

R µ/l A

R = ρ I/A

where ρ is a constant of proportionality called specific resistance or resistivity of the material of the conductor.

The S.I. unit of resistivity is ohm metre (Ωm). The metals and alloys have very low resistivity in the range of 10–8 Ω m to 10–6 Ω m. They are good conductors of electricity. Insulators like rubber and glass have resistivity of the order of 1012 to 1017 Ωm. Both the resistance and resistivity of a material vary with temperature.

ANSWER

https://examin8.com

Test

Related Questions

How do organisms obtain their nutrition?

Posted by Rani Alan 1 year, 7 months ago

CBSE > Class 10 > Science

1 answers

What effect does the concentration of H+(aq) ions have on the nature of the solution

Posted by Tushar Sharma 1 year, 7 months ago

CBSE > Class 10 > Science

2 answers

How does our body respond when adrenaline is Secreated into the blood

Posted by Aadarsh Tripathi 1 year, 7 months ago

CBSE > Class 10 > Science

2 answers

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Ansh Preet 2 months, 1 week ago

CBSE > Class 10 > Science

1 answers

Explain three stages of resource planning

Posted by Harshita Tondey 1 year, 7 months ago

CBSE > Class 10 > Science

3 answers

What is the importance of variation explain in 4 to 5 points

Posted by Harshal Patil 1 year, 1 month ago

CBSE > Class 10 > Science

0 answers

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Pandey Ji 8 months, 2 weeks ago

CBSE > Class 10 > Science

0 answers

Obtain the relation between incidence angle, emergence angle, prism angle and deviation angle for refraction through prism How to derive this

Posted by Ankita Yenteth 1 year, 7 months ago

CBSE > Class 10 > Science

0 answers

A current of 5 mili mpr is passing through a wire how many electrons are passing through per minute through the area of cross section of the wire

Posted by Sahana Laskar 1 year, 1 month ago

CBSE > Class 10 > Science

0 answers

What is the function of petal and sepal.

Posted by Surya Kumar 1 year, 7 months ago

CBSE > Class 10 > Science

1 answers

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Google Play

Download myCBSEguide App