what happens to resistance,when conductor diameter is doubled?

Asked by N.SRIVATS ATHINDRAN | 26th 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  | 27th Mar, 2012, 03:26: PM

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