Question

ratio of resistance of a conductor when length is doubled and cross section area is doubled​

Answer 1

Answer:

The resistance of conductor (wire) R is given by,

R equals fraction numerator rho L over denominator A end fraction

w h e r e comma space R minus R e s i s tan c e space o f space c o n d u c t o r

L minus space l e n g t h space o f space c o n d u c t o r

rho minus space r e s i s t i v i t y

A minus space A r e a space o f space c r o s s space s e c t i o n

If length is doubled

R equals fraction numerator rho left parenthesis 2 L right parenthesis over denominator A end fraction

R equals 2 open parentheses fraction numerator rho L over denominator A end fraction close parentheses

If length is doubled resistance is doubled

Step-by-step explanation: