Question

what are the factors which influence the resistivity of a wire ?
a)temperature, volume and density of the wire .
b)space and area of the wire .
c)density and the length of the wire .
d)temperature and material of wire .​

Answer 1

Answer:

option (d) is the right answer.resistivity of a wire depends upon the temperature and the material from which it has made.

Answer 2

Answer:

The factor which influences the resistivity of a wire is temperature and the material of the wire.

Explanation:

• The ability of a substance to resist the flow of an electric current varies from material to material, with some materials being more resistant than others.

• With the aid of this resistivity factor, also known as its "specific electrical resistance," it is possible to compare the resistance of various conductor types at a given temperature based solely on their physical characteristics, without taking into account their lengths or cross-sectional areas.
• So, the more resistance there is, and vice versa, the greater the resistivity value of the system.

• Because they are known for having low levels of resistivity, metals like copper and aluminum are great for making electrical lines and cables because electrical currents can easily move through them.
• Silver and gold have substantially lower resistivity ratings but are more expensive to convert for obvious reasons.

• The metal has a positive temperature coefficient of resistance because it becomes more resistive as the temperature rises.
• Conductivity diminishes and conductor resistance rises at high temperatures.

• The factor which influences the resistivity of a wire is temperature and the material of the wire.

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