what do you understand by resistivity? if length will be half then what will be effect on resistivity of a conductor
plz give answer faster then i mark as brainlist
plz give answer faster then i mark as brainlist
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HERE IS UR ANS⤵⤵
L=Length
A=Area
R=Resistivity
ρ=constant
According to the problem:-
R= ρL/A
Now if the length is doubled then area will be halved (bcoz the material of wire provided is fixed)
A & B.......so if length is doubled and area is halved.
new length=2L
new area =A/2
so R =ρ4L/A (put the values)so resistivity becomes 4 times the originalD.....Now if length is halved (area is doubled)
new length=L/2
new area= 2A
so R=ρL / 4ASo resistivity becomes 1/4 th timesC......Length and area doubled
new area=2A
new length=2L R esitivity remain same
HOPE IT HELPS U ^_^....⤴⭐⭐