Question

Two bulbs are marks 100w:200v and 200w:200v are connected in series.will both the bulbs glow?justify your

Answer 1

Explanation:

Power of first bulb=100 watt

So, v²/r=100

or, 200×200=r×100

or, r=400 ohm.

Power of second bulb=200 watt

So, v²/r=200

or, 200×200=r×200

or, r=200 ohm.

$so \: both \: the \: bulbs \: will \: glow \: but \: the \: second \: bub \: will \: glow \: with \: a \: more \: intensity \: than \: first \: bulb$