Physics · Current Electricity
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Resistance of a conductor depends upon ____.
- A
Temperature
- B
Nature of conductor
- C
Length
- D
None of these
Correct Option:C
The resistance of a conductor depends on various factors, but one of the primary factors is the length of the conductor. The resistance is directly proportional to the length of the conductor. This relationship is described by the formula:
Resistance = (ρ * Length) / Area
Where ρ (rho) is the resistivity of the material, Length is the length of the conductor, and Area is the cross-sectional area of the conductor.
A) Temperature: Temperature can also affect the resistance of a conductor. In general, the resistance of most conductors increases with an increase in temperature.
B) Nature of conductor: The nature of the conductor, specifically its material and its resistivity, also affects its resistance. Different materials have different resistivities, which determine their inherent resistance.
Correct Option:C
The resistance of a conductor depends on various factors, but one of the primary factors is the length of the conductor. The resistance is directly proportional to the length of the conductor. This relationship is described by the formula:
Resistance = (ρ * Length) / Area
Where ρ (rho) is the resistivity of the material, Length is the length of the conductor, and Area is the cross-sectional area of the conductor.
D) None of these: This option is incorrect because the resistance of a conductor depends on several factors, including length, temperature, and the nature of the conductor.
Tagged under Physics · Current Electricity · 2021