A 200W,230V lamp is connected across 115V supply.The lamp will
draw power?
Answer Posted / satheesh
The above answer is also wrong and Ist answer i
correct.Since the bulb is rated for 230 V and the power is
200W only at rated voltage.So the resistance is constant for
this rating.v2/w=230^2/200=264.5 ohms.If we apply 115 V also
this resistance will not vary.So the current drawn at this
time is v/R=I=115/264.5=0.435A=So definitely power = V*I
115*.435=50 Watts.
Is This Answer Correct ? | 21 Yes | 16 No |
Post New Answer View All Answers
what is mean by parallel operation of permanent magnet generators
Can u Explain about the electronic trivector meter and the use of data converters in them?
What is meant by harmonic distortion?
how to flameproof electrical motor on the shaft?
Mention what are the types of semi-conductors?
Why Ac Systems Are Preferred Over Dc Systems?
What type of wiring series or parallel is used for conventional and addressable type FAS & why?
what is different between phase and netural
what happen when increase or decrease size of lamp,light.glass.
what is the requirement regarding earthing of Single conductor with AWA
What is kvar?
how withstand of hi-pot test outputs of transformer wire 2.5mm
why occ characteristics curve in not tracing back when we are bringing back the rhoestat?
whit is 33kv power 300*300 cable full current with formula
kindly send me 11KV MV motor differential protection procedure by primary injection method.