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The resistivity of a material of a wire is 44×10^-8 ohm m. If the resistance of the wire is 14 ohm and it's diameter is 1 mm, calculate the length of the wire?
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The resistivity of a material of a wire is 44×10^-8 ohm m. If the resi...
Calculation of Length of Wire
Given:
- Resistivity of wire material = 44 x 10^-8 ohm m
- Resistance of wire = 14 ohm
- Diameter of wire = 1 mm
Formula:
Resistance of wire = (Resistivity x Length) / Area of cross-section of wire
Area of cross-section of wire = (π x Diameter^2) / 4
Solution:
Area of cross-section of wire = (π x 1^2) / 4 = 0.785 mm^2 = 7.85 x 10^-7 m^2
Resistance of wire = (44 x 10^-8 x Length) / (7.85 x 10^-7)
Length of wire = (Resistance of wire x Area of cross-section of wire) / Resistivity of wire
Length of wire = (14 x 7.85 x 10^-7) / 44 x 10^-8
Length of wire = 2.4875 m
Answer:
The length of the wire is 2.4875 m.
Community Answer
The resistivity of a material of a wire is 44×10^-8 ohm m. If the resi...
Resistivity=44×10^-8ohm m
resistance=14ohnm
area=πr^2 = 22/7×|/4×10^8
l=r×a/resistivity
=14×22/28×10^8÷44×10^-8
=25m
resistance=14ohnm
area=πr^2 = 22/7×|/4×10^8
l=r×a/resistivity
=14×22/28×10^8÷44×10^-8
=25m
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The resistivity of a material of a wire is 44×10^-8 ohm m. If the resistance of the wire is 14 ohm and it's diameter is 1 mm, calculate the length of the wire?
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The resistivity of a material of a wire is 44×10^-8 ohm m. If the resistance of the wire is 14 ohm and it's diameter is 1 mm, calculate the length of the wire? 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 The resistivity of a material of a wire is 44×10^-8 ohm m. If the resistance of the wire is 14 ohm and it's diameter is 1 mm, calculate the length of the wire? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The resistivity of a material of a wire is 44×10^-8 ohm m. If the resistance of the wire is 14 ohm and it's diameter is 1 mm, calculate the length of the wire?.
The resistivity of a material of a wire is 44×10^-8 ohm m. If the resistance of the wire is 14 ohm and it's diameter is 1 mm, calculate the length of the wire? 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 The resistivity of a material of a wire is 44×10^-8 ohm m. If the resistance of the wire is 14 ohm and it's diameter is 1 mm, calculate the length of the wire? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The resistivity of a material of a wire is 44×10^-8 ohm m. If the resistance of the wire is 14 ohm and it's diameter is 1 mm, calculate the length of the wire?.
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