two bolbs of 100w and 40w respectively connected in series
across a 230v supply.which bolb will glow bright and why?
Answer Posted / ramesh behera
Current in series connection is always same and voltage is
divided.here,
resistance of 40W bulb is higher than 100W bulb.
resistance of 40 watt is high so less current required to
glow a 40W bulb.
resistance of 100 watt is low so high current required to
glow a 100W bulb.
high resistance so voltage require more for glows = 40watt
glows more
similarly ,low resistance so voltage require less for glows
= 100w glows dim
formula I=V\R.
Is This Answer Correct ? | 19 Yes | 12 No |
Post New Answer View All Answers
how can see the ac indoor or out door ac which Tr
WHY RATING OF VCB NOT LESS THAN 630A
In between UPS out going changer over switch and ups raising main input, both side cable gland producing heat but the cable doesn't get heat,Why?
What is distance between electrical panel to land ?
Transformer cores are laminated in order to A simplify its construction B minimize eddy current loss C reduce cost D reduce hysterisis loss
if grounding is notdone at regular intervals for long distance transmission, will the load connected at distribution end receive voltage during negativehalf cycle of the sine wave?
Define ohm’s law for a.c (alternating current)?
What happens to voltage when current through the inductor is constant?
Explain dc generator with its types?
can we use NPT glands in LT panel
A jet of fluid strikes a plate What was the force required to counter it?
what is zinc diffusion?
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?
sir i ve applied for hindustan petroleum and power grid india ltd..and the exams on feb 22.can you pls send model papers and tell how to prepare for those.i need to get into any of these for sure.....
Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer