Physics, asked by panuj329p1gs45, 1 year ago

In a wire i=2,V=3 and if in the same wire i=3,V=2 then calculate r1:r2

Answers

Answered by guiltguitarist

r = v/ i
by solving both r1 & r2.
we get-

r1 = 3/2

r2 = 2/3

r1/r2 = 3/2 ÷ 2/3

= 9 / 4

or 9 : 4

panuj329p1gs45: but dont u think resistance is a constant quantity for a particular wire

guiltguitarist: yes. but by ohms low changes voltage & current can also change the resistence

guiltguitarist: ohms law

panuj329p1gs45: according to ohms law....resistance is a constant quantity

panuj329p1gs45: means u can't change it even changing v or i

8290geet: but r depend upon physical quantity

guiltguitarist: but if v & I are changing it would definitely change the R

panuj329p1gs45: Kindly go and search ohms law

guiltguitarist: Individual resistors in series do not get the total source voltage, but divide it.

Answered by 8290geet

I=V/R
then R=V/I
R1=3/2
R2=2/3
R1/R2 =3×3/2×2
R1/R2=9/4

8290geet: yes but r depend upon physical quantity length ,area,temp.etc

panuj329p1gs45: yes...but i didn't change any physical quantity

panuj329p1gs45: i only changed v and i

panuj329p1gs45: then how im getting two answer

8290geet: agr wire same h tho voltage or current me se ek quentity same hogi

panuj329p1gs45: haa to

8290geet: but tumne dono quality different btai h so iska r bhi different hoga

panuj329p1gs45: so question was wrong

8290geet: tnx

panuj329p1gs45: thnx

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