what happens to resister when the area of cross section is half?
Answers
Answered by
1
Answer:
The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. ... The resistance of a conductor, or circuit element, generally increases with increasing temperature.
Answered by
1
Explanation:
We know that the resistance of wire of length L and of cross section area A is R=
A
ρL
where ρ= resistivity of metal of the wire.
When length and cross section are doubled, the resistance becomes R
′
=
(2A)
ρ(2L)
=
A
ρL
=R
Similar questions