Question

Mixed Review 21.107 1 of 42> Constants Part A Consider the circuit shown in the figure (Figure 1), in which three lights, each with a resistance R, are connected in series. The circuit also contains an open switch When the switch is closed, does the intensity of light 2 increase, decrease, or stay the same? O The intensity of light 2 increases. O The intensity of light 2 decreases O The intensity of light 2 stays the same Submit Request Answer Figure 1 of1 Part B This question will be shown after you complete previous question(s) Part C Do the intensities of lights 1 and 3 increase, decrease, or stay the same? O The intensities of lights 1 and 3 increase The intensities of lights 1 and 3 decrease The intensities of lights 1 and 3 stay the same Submit Request Answer

Answer 1

" Current through all the bulb (1) (2) &(3) E/3R finally, now, current through bulb (2) will not flow as there in a plane wire (No mean plane wire) connected that in parallel with it so the entre current will flow from the width ""s"" this is makes the net resistance of the circuit ""2R"" and current through each bulb (1) &(2) E/2R a) the intensity of 2 will decrease as there is no current passing through it b) the intensity of 1 & 3 will increase as the current passing through them increases from E/R to E/2R"