CBSE Class 12-science Answered
what happens to resistance,when conductor diameter is doubled?
Asked by N.SRIVATS ATHINDRAN | 26 Mar, 2012, 11:22: PM
Expert Answer
No, suppose diameter = 4cm. So, radius is 2cm.
Now, if u doubled the diameter it will 8 cm . And radius will be 4cm.
So radius got doubled , not four times.
resistance is directly proportional to wire length and inversely proportional to wire cross-sectional area. In other words, If the wire length is doubled, the resistance is doubled too. If the wire diameter is doubled, the resistance will reduce to 1/4 of the original resistance
Answered by | 27 Mar, 2012, 03:26: PM
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