Question

Read the following and answer any four questions from 18 ) to
Resistance of a conductor depends on the length area of cross sec
tion and nature of the material of the conductor When a conductoris
stretched (increased in its length), then its area of cross section
decreases accordingly but the volume (ie, area x length of the con
ductor remains same.
18 ) VI graphs for two wires A and B are shown in the figure. Both
wires are of same length and the same thickness, then
1
a) The resistivity of wire A is greater than that wire B
b) The resistivity of wire B is greater than that of wire A
c) The resistivity of both the wires are equal
d) This gruph does not depict any information regarding the resisti
ity is of two wires
18 (u) the length (L) of a wire of resistance (R) is halved and area
cross section (A) doubled its new resistance (R') will be
(a) R (6) R2 (d) R4 (MR8
18 (u) the figures below shows four cylindrical copper condu
along with their face areas and length, geometrical shape in
the resistance will be highest is​

Answer 1

Answer:

I did not get the answer for this

Read the following and answer any four questions from 18 ) to

Resistance of a conductor depends on the length area of cross sec

tion and nature of the material of the conductor When a conductoris

stretched (increased in its length), then its area of cross section

decreases accordingly but the volume (ie, area x length of the con

ductor remains same.

18 ) VI graphs for two wires A and B are shown in the figure. Both

wires are of same length and the same thickness, then

1

a) The resistivity of wire A is greater than that wire B

b) The resistivity of wire B is greater than that of wire A

c) The resistivity of both the wires are equal

d) This gruph does not depict any information regarding the resisti

ity is of two wires

18 (u) the length (L) of a wire of resistance (R) is halved and area

cross section (A) doubled its new resistance (R') will be

(a) R (6) R2 (d) R4 (MR8

18 (u) the figures below shows four cylindrical copper condu

along with their face areas and length, geometrical shape in

the resistance will be highest is