• 072920 77839
  • info@smartachievers.in
Menu
Back
  • JEE ADVANCE
  • JEE MAIN
  • NEET
  • BITSAT
  • CBSE BOARD
  • UP BOARD
  • CUET
JEE ADVANCE
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
JEE MAIN
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
NEET
  • CLASS XI - XII
  • CRASH COURSE
BITSAT
  • CLASS XI - XII
CBSE BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
  • CLASS VI
  • CLASS VII
  • CLASS VIII
UP BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
CUET
  • CRASH COURSE
Courses


Solution


Q.

A student plots V–I graphs for three samples of nichrome wire with resistances R₁, R₂, and R₃.


Choose the correct statement that holds true for this graph:
1 R₁ = R₂ = R₃  
2 R₁ > R₂ > R₃  
3 R₃ > R₂ > R₁  
4 R₂ > R₁ > R₃  

Ans.

(4)

As it is clear From the graph, the current for conductor A₂ is less than that for A₁, and A₁ is less than A₃.
we can say , Iₐ₂ < Iₐ₁ < Iₐ₃.

We know, R = V/I or R ∝ 1/I.

If I is less, then R will be more

Iₐ₂ < Iₐ₁ < Iₐ₃R₂ > R₁ > R₃.