Question
if the area of cross section of a wire in a circuit is doubled its resistivity?
(a)becomes one fourth,(b) becomes half (c) remains the same (d) doubles.
Exlpain please?
(a)becomes one fourth,(b) becomes half (c) remains the same (d) doubles.
Exlpain please?
Answers
Damon
Resistance is cut to 1/4 of original
HOWEVER
resistivity is a function of material. It does not change with geometry
so
(c) remains the same.
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/resis.html
HOWEVER
resistivity is a function of material. It does not change with geometry
so
(c) remains the same.
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/resis.html