Question

CLASS-X
1. If the length of the wire of same material and same thickness is doubled then how its
resistance will change?​

Answer 1

Answer:

if length will doubled the. resistence will doubled

if thickness doubled then resistance will half ...

thank you

Answer 2

Answer:

initial Resistance = p. initial length/area of cross

section

R = p.L/A

final length = 2L

and final area of cross section = A

final resistance R' = p.2L/A

R' = p.2L/A

R' = 2R

changes

- final resistance becomes twice of initial resistance