110. ശ്രീ ഉണ്ണികൃഷ്ണന്റെ പരീക്ഷണം - ബള്‍ബുകള്‍ സീരീസില്‍

ബള്‍ബുകള്‍ സീരീസില്‍ എന്ന പോസ്റ്റിനെ സംബന്ധിച്ച് ശ്രീ ഉണ്ണികൃഷ്ണന്‍ ഒരു മെയില്‍ അയച്ചിരുന്നു. അദ്ദേഹത്തിന്റെ അനുമതിയോടെ അത് പ്രസിദ്ധീകരിക്കുന്നു.ചിത്രവും അദ്ദേഹം അയച്ചുതന്നതാണ് . ആദ്യത്തെ കത്ത് Respected Sunil Sir, I am an electronic Technician and interested in doing experiments for learning. I came across your Malayalam web site and found experiments about series bulbs. I never believed you that one bulb in the series circuit is not glowing. So I tried to do the experiment by myself. I bought 2 nos. of 15 watts bulb and one 40 watts bulb. Connected them together in series and switched on. It was surprise to note that you are right. The 40 watts bulb is not at all burning. First I thought that there was some short circuit in the 40 watts bulb. So I checked the voltages across each bulb and the readings are as given: 40 watts bulb: 9.42 V 15W bulb 1 : 115.3 V 15 W bulb2: 109.2 v Supply voltage: 232V Resistance of 15 W lamp1 = 288 ohms Resistance of 15 w 2 = 275 ohms Res 40 w = 97 ohms I tried to understand the behavior of the circuit and read all the opinions given on your page. However, I am in total confusion as the voltages measured are not matching with the values as predicted by Thravati sir. Can you give me an explanation to the experimental result? Anything wrong with my wiring? I humbly request you to clear my doubts, Thanking you, Sincerley Unnikrsihnan, രണ്ടാമത്തെ കത്ത് : Respected Sir, In my earlier mail I forgot to mention the Current in the circuit. It is 45.8 mA. I eagerly waiting for your reply. Thanking you Unnikrishnan.