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Resistivity of a given conductor depends on
- a)length of conductor
- b)length as well as cross-section area of conductor
- c)material and dimensions, of conductor
- d)material of conductor and temperature
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Resistivity of a given conductor depends ona)length of conductorb)leng...
Resistivity of a given conductor depends only on its material and the temperature. Resistivity does not depend on the dimensions of the conductor.
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Resistivity of a given conductor depends ona)length of conductorb)leng...
The resistivity of a conductor is the measure of the opposition it offers to the flow of electric current through it. It depends on various factors, as explained below:
Material of conductor:
The resistivity of a conductor mainly depends on the type of material it is made up of. Different materials have different resistivities. For instance, copper has a lower resistivity than iron.
Temperature:
The resistivity of a conductor is also affected by the temperature of the conductor. Generally, the resistivity of a material increases with an increase in temperature.
Dimensions of conductor:
The resistivity of a conductor is inversely proportional to its cross-sectional area. Hence, a conductor with a larger cross-sectional area will have a lower resistivity than a conductor with a smaller cross-sectional area. Similarly, the resistivity of a conductor is directly proportional to its length. A longer conductor will have a higher resistivity than a shorter conductor.
Conclusion:
To summarize, the resistivity of a conductor depends on the material it is made up of, the temperature of the conductor, and its dimensions (length and cross-sectional area). Hence, the correct option is D.
Material of conductor:
The resistivity of a conductor mainly depends on the type of material it is made up of. Different materials have different resistivities. For instance, copper has a lower resistivity than iron.
Temperature:
The resistivity of a conductor is also affected by the temperature of the conductor. Generally, the resistivity of a material increases with an increase in temperature.
Dimensions of conductor:
The resistivity of a conductor is inversely proportional to its cross-sectional area. Hence, a conductor with a larger cross-sectional area will have a lower resistivity than a conductor with a smaller cross-sectional area. Similarly, the resistivity of a conductor is directly proportional to its length. A longer conductor will have a higher resistivity than a shorter conductor.
Conclusion:
To summarize, the resistivity of a conductor depends on the material it is made up of, the temperature of the conductor, and its dimensions (length and cross-sectional area). Hence, the correct option is D.
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Resistivity of a given conductor depends ona)length of conductorb)leng...
Nature of the material
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Resistivity of a given conductor depends ona)length of conductorb)length as well as cross-section area of conductorc)material and dimensions, of conductord)material of conductor and temperatureCorrect answer is option 'D'. Can you explain this answer?
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