Will current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?
Resistance of a conductor is inversely proportional to the area of cross-section of the wire.Thicker the wire, lower is the resistance of the wire and vice-versa as current can flow more easily through a thick wire than a thin wire.
Resistance is tendency that oppose the flow of current which depends upon
R= 
l = Length of the wire
A = Area of cross-section of the wire
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