While connecting bulb in Series/Parallel,there is any
difference in glowing

Answer Posted / iamdon

Consider this case with two identical bulbs.The resistance
(calculated by voltage squared diveded by power rating of
bulb) of ecah bulb will be same.

Lets the resistance of each bulb is R and the supply
voltage is V.

Power absorbed in series by one bulb=(V/2)*(V/2)/R=V*V/4R
Power absorbed in parallel by one bulb=(V*V)/R=V*V/R

Clearly, the bulb in parallel glow more.Thats why household
wiring are done in parallel mode.

Author:arbelectbit@yahoo.com

Is This Answer Correct ?    3 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is difference between line differential and transformer differential?

1228


what are the things that can cause a three phase motor to crawl?

2860


whit is 33kv power 300*300 cable full current with formula

1387


can i use 4 number of circuit breaker as single phase manual change over switch? if yes then how plz also send ckt diagram at nazimzamurad@gmail.com

1614


Witch do depand of Power factor and theory of power factor?

1643






STATE USE OF ARC RUNNERS & SPLITTERS ?

1453


List few applications of d.c series motor?

695


Operation carried out in thermal power stations?

588


how  do you choose the cable size as per amps rating & the voltage drop for the same.

1326


A 7 storey building has a floor area of 35,000sq.ft on each storey. On the ground floor 11KV electrical sub-station is to be erected. A load of 3kw for every 400sq.ft (p.f is 0.8) is proposed for each floor. fire pump 7.5hp, water pump 5hp, lift 2 nos, each 10hp and 20shop load of each shop is 5kw. calculate a. load each floor b. total load of building c. L.T feeders for aech floor and from transformer to main. d. distribution diagram e. capacity of sub-station/capacitor bank f. line diagram

2365


If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?

1411


My question is abt backlog.I had dropped one subject in my second year, and completed this subject in the 3rd attempt, so how many backlogs i have got?1 or 3?plz sujjest the answer as soon as possible

1584


which stabilizer is better ? AVR, Servo Stabilizer, Static stabilizer etc & why explain it

2410


What is the difference between grid and off- grid system??

1474


howmany electrician should maintain for a 1000 kva used plant... in kerala..

1617