Question

PLEASE ANSWER BOTH:)

Question 1: Which of the following is the correct ranking of the brightness of the light bulbs in the circuit shown to the right? B А. E С D A) A > B> C >D > E B) A > E > B > C > D C) A = E > C=D > B D) A = E > B>C= B E) C = D > B > A = E Question 2: Which of the following cannot be the equivalent resistance of a circuit that contains three 60 N resistors? A) 180 12 Β) 90 Ω C) 40 12 D) 2012 E) 10 12

Answer 1

Question 1. As Current E Let us I let us Current through Art is same as current through say and current through c is same as current through and current through B is say According to Kirchoffs Current Law I t Iz And According to Current divider rule I, = {I2 say I I I = -) I>I, F I In IL"> Iz so I, >I, >I, ..ta and Brightness of bult is proportional to Current lowing through the bulb " Brightness of bulbs will have following order AEYB>C=D Question ? There are following combinalions of three resistors possible and their equivalent resistors 1 2 w Req, = 1802 902 B. # W E Rega 240€ Reque solo los cannot be equivalent Resistance of three 602 resistors. 5202