Elaborate on the reason for the difference in resistance
Answers
Answer:
There is a difference in resistance because resistance depends on temperature. It is directly proportional to temperature( i.e. When the temperature increases the resistance also increases ).
Explanation:
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Resistance is directly proportional to the length and temperature while it is inversely proportional to the cross-sectional area of the material
Resistance is the physical property of a substance because of which it opposes the flow of current i.e. electrons.
Resistance is the opposition that a substance offers to the flow of electric current. It is represented by the uppercase letter R. The standard unit of resistance is the ohm, sometimes written out as a word, and sometimes symbolised by the uppercase Greek letter omega
Explanation:
When an electric current flows through a conductor such as a metal wire, the moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.
The resistance of a long wire is greater than the resistance of a short wire because electrons collide with ions more often.
The resistance of a thin wire is greater than the resistance of a thick wire because a thin wire has fewer electrons to carry the current.