The resistance of the conductor is …

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The resistance of the conductor is R. If its length is doubled, then its new resistance will be?

Posted by Sapna Bhutani 5 years, 2 months ago

CBSE > Class 10 > Science

5 answers

Manthan Singhal 5 years, 2 months ago

Original: Resistance = R Length = l Area of cross section = a Resistivity = rho R = rho * l ÷ a New : Length = 2l Area = a/2 R= (rho * 2l ) / a/2 R= 2( rho * 2l) /a R= 4 ( rho * l) /a R = 4 times original resistance

0Thank You

Arunpratap Singhbhadoriya 5 years, 2 months ago

The new resistance will be 2r , as length and resistance are directly proportional to each other...I guess you must have understood Ok

1Thank You

Swayong Prakash Sahoo 5 years, 2 months ago

The new resistance will be 2r , as length and resistance are directly proportional to each other...I guess you must have understood...

1Thank You

Varun Kumar Barnwal 5 years, 2 months ago

The New resistance will be 2R , BECAUSE Wkt , R directly proportional to length of wire(it is in resistivity relation) so, if L is doubled then the new R will also be double as same. That's my answer , it would be wrong, Sorry.

4Thank You

Ganesh Sharma 5 years, 2 months ago

New resestance will be 4r.???

5Thank You

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CBSE > Class 10 > Science