d wine of length centain line and cection diameter ²mm of shows la resistance 642 then find the Reasistance of a wire 4mm of same length?
Answers
Answered by
2
Answer:
The resistance of a conductor of length L and diameter d is given by R=
π(d/2)
2
ρL
where ρ= resistivity of material of conductor.
When diameter is doubled, the resistance becomes R
′
=
π(2d/2)
2
ρL
=R/4
Explanation:
Answered by
3
Answer:
The resistance of a conductor of length L and diameter d is given by R=π(d/2)2ρL where ρ= resistivity of material of conductor.
When diameter is doubled, the resistance becomes R′=π(2d/2)2ρL=R/4
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