Question

Show how to solve and principle used

Exercise 3.5. Rank the light bulbs in order of increasing voltage. All light bulbs have the same resistance. YH

Answer 1

Solution 3.5 In order to solve this question, you must know, vollage auror each of bulb, is; V = IR O conidoration, and RE Rexistance of that bulb, Resistance is same for all ie R (say) Now : - 3 . Consider case (B) dhe simply · Case C . Here, 3v & Bu are in series 6V - 3U 3U So het voltage of battery is 3+3 =6V as shown : Ica en Care (D) H P Again, in series 3v 3v but with same polarity ends connected, herce net voltage of battery .ID = = 0 offered = 3-3=0v

Now Case (E) This you try to understand, Bulb and two sv batteries are in parallel as shown, and in parallel, voltage remains tame, A voltage across bulls for this erase is simply 3 v 13V Hence VB = IB R = 3 V v = IcR = 6v Vp = Jor=ov VE = 3 V :- No <VE = Vp < Ve Hope you like my solution & my efforts :-)