Interested to Buy Any Domain ? << Click Here >> for more details...
when 40 watts and 60 watts bulb is connected in series,
which bulb glows brightly ?
- 5 Answers
- 17954 Views
- I also Faced
- E-Mail Answers
Answer Posted / wareagle
Ksb Quote "40 wattbulb has higher resistance(1440) so a
low current pass through it but 60 watt has low resistance
it glows brightly" That would be true if the bulbs are
connected in parallel but they are connected in series.
Read the question. Do you know what that means?
Ksbn That is incorrect. Lets find the answer.
Voltage = 240 volts
Watts = 40 watt and 60 watts
R60 = 240x240/60= 960 ohms
R40 = 240x240/40= 1440 ohms
Total of R60 + R40 = 960 + 1440 = 2400 ohms for series ckt
Amps = 240/2400 = 0.10 amps flowing thru both 40w and 60w
watts = amp²x R
watts for 60 watt = amp²x R = 0.10² x 960 = 0.01 x 960 =
9.6 watts
watts for 40 watt = amp²x R = 0.10² x 1440 = 14.4 watts
Therefore 40 watt is brighter.
Remember the bulbs are connected in series not parallel.
| Is This Answer Correct ? | 38 Yes | 1 No |
Post New Answer View All Answers
If VFD is On but no starting commond on it. so how many outpout voltages of VFD
What is the Diff. btw Manule Pull Station & Manule Abort Station Switches used in FM200 System??
How can we calculate strength of copper hich is supplying electric power to heater and in it hold the heater also and what r all types of forces which is acting on it...
WHAT IS THE FAULT WHEN 100HP TURBINE MOTOR TRIPS, LIST THE FAULTS AND ITS TRABULESHOOTING TIPS.. MY AUTO TARNSFORMER STARTER TRIPS
WHY THE COLOR OF OUTDOOR TRANSFORMER IS BLUE ONLY???
How shall i select the value of capacitor or inductor in a system?
Show the schematic arrangement of diesel power station layout and give its principle of operation.
A low wet bulb temperature indicates
If a transformer primary winding operates at 240v, the secondary at 120v and the load is 1500w & the transformer is rated at 92% efficient, what's the current flowing through the primary winding of the transformer? What is the formula for finding this?
How would you relate your key competencies to this position?
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.....
distribution is maximum done by a)radial b)network c) parallel d)b & c
given data are load current & power factor cable core size? plz any one update the calculation formula
how to failure indution motor insulation & how to improve heat in motor insulation
What are the disadvantages of autotransformer?
