Class 10 Exam > Class 10 Questions > Calculate the resistance of 2 km long copper ...
Start Learning for Free
Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)?
Most Upvoted Answer
Calculate the resistance of 2 km long copper wire of radius 2mm.( Resi...
Community Answer
Calculate the resistance of 2 km long copper wire of radius 2mm.( Resi...
Calculation of resistance of a copper wire
Given:
- Length of copper wire = 2 km = 2000 m
- Radius of copper wire = 2 mm = 0.002 m
- Resistivity of copper = 1.72 x 10^-8 Ωm
Formula:
The formula to calculate the resistance of a wire is:
R = ρl / A
Where,
- R = Resistance of wire in ohms (Ω)
- ρ = Resistivity of copper in ohm-meters (Ωm)
- l = Length of wire in meters (m)
- A = Cross-sectional area of the wire in square meters (m^2)
Calculation:
The cross-sectional area of the copper wire can be calculated as:
A = πr^2
Where,
- r = radius of the copper wire in meters
Substituting the given values in the formula, we get:
A = π(0.002)^2 = 1.2566 x 10^-5 m^2
Now, substituting the values of resistivity, length, and cross-sectional area in the formula for resistance, we get:
R = (1.72 x 10^-8) x 2000 / (1.2566 x 10^-5) = 2.75 Ω
Conclusion:
The resistance of the 2 km long copper wire of radius 2 mm is 2.75 Ω.
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
|
Explore Courses for Class 10 exam
|
|
Similar Class 10 Doubts
Top Courses for Class 10View all
Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)?
Question Description
Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)?.
Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)?.
Solutions for Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)? in English & in Hindi are available as part of our courses for Class 10.
Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)? defined & explained in the simplest way possible. Besides giving the explanation of
Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)?, a detailed solution for Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)? has been provided alongside types of Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)? theory, EduRev gives you an
ample number of questions to practice Calculate the resistance of 2 km long copper wire of radius 2mm.( Resistivity of copper = 1.72 *1 0^-8)? tests, examples and also practice Class 10 tests.
|
|
Explore Courses for Class 10 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup