two bolbs of 100w and 40w respectively connected in series
across a 230v supply.which bolb will glow bright and why?
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Answer Posted / jigyesh sharma
SINCE TWO BULBS ARE IN SERIES THEY WILL GET EQUAL AMOUNT OF
CURRENT.
BUT AS THE SUPPLY VOLTAGE IS CONSTANT SO BY EQN.P=V^2/R;
SO RESUSTANCE OF 40W BULB WILL BE MORE.
VOLTAGE ACROSS 40 W WILL BE MORE AS V=IR;
SO IT WILL GLOW BRIGTER;
| Is This Answer Correct ? | 164 Yes | 36 No |
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