What causes resistance in a conductor?
Answers
Answer:
An electric current flows when electrons move 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.
Explanation:
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Cause Of Resistance In A Conductor
The resistance of a conductor is defined as the resistance offered by the conductor for the flow of electric current through it. The SI unit of resistance is Ohm. The mathematical representation is given as:
R=V/I
Where,
R is the resistance
V is the potential difference
I is the current
Resistance is caused in a conductor by the free electrons. These free electrons collide with each other and with the ions and atoms that oppose their free movement. This obstruction is known as resistance.
Resistance depends on the following factors:
Length of the conductor
Area of cross-section
Material of construction