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If two copper wires of length l and 2l, area A and 2A are taken, then
- a)The specific resistance of first is greater than that of the second
- b)The specific resistance of the second wire is greater than that of the first
- c)The specific resistance of both the wires is same
- d)The specific resistance is not be predictable
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
If two copper wires of length l and 2l, area A and 2A are taken, thena...
Explanation:
The specific resistance of a material is a constant property that depends only on the material itself, not on the dimensions or shape of the object made from that material. In this case, both wires are made of copper, so they have the same specific resistance.
Properties of the wires:
- First wire: Length = l, Area = A
- Second wire: Length = 2l, Area = 2A
Calculating resistance:
The resistance of a wire is given by the formula: R = ρ * (L/A), where ρ is the specific resistance, L is the length, and A is the cross-sectional area.
For the first wire:
R1 = ρ * (l/A)
For the second wire:
R2 = ρ * (2l/2A) = ρ * (l/A)
Since both wires have the same specific resistance (ρ) and the ratios of length to area are the same for both wires, the resistance of both wires will be the same.
Therefore, the specific resistance of both wires is the same (option C).
The specific resistance of a material is a constant property that depends only on the material itself, not on the dimensions or shape of the object made from that material. In this case, both wires are made of copper, so they have the same specific resistance.
Properties of the wires:
- First wire: Length = l, Area = A
- Second wire: Length = 2l, Area = 2A
Calculating resistance:
The resistance of a wire is given by the formula: R = ρ * (L/A), where ρ is the specific resistance, L is the length, and A is the cross-sectional area.
For the first wire:
R1 = ρ * (l/A)
For the second wire:
R2 = ρ * (2l/2A) = ρ * (l/A)
Since both wires have the same specific resistance (ρ) and the ratios of length to area are the same for both wires, the resistance of both wires will be the same.
Therefore, the specific resistance of both wires is the same (option C).
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If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer?.
If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer?.
Solutions for If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 10.
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If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of If two copper wires of length l and 2l, area A and 2A are taken, thena)The specific resistance of first is greater than that of the secondb)The specific resistance of the second wire is greater than that of the firstc)The specific resistance of both the wires is samed)The specific resistance is not be predictableCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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