Two bulbs having ratings B1 (220 V, 50 W) and B2
(220 V, 60 W) are connected in series across 220 V
battery. Choose the correct statement.
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Question - Two bulbs having ratings B1 (220 V, 50 W) and B2
(220 V, 60 W) are connected in series across 220 V
battery. Choose the correct sstatement -
- B1 will flow brighter than B2.
- B2 will glow brighter than B1.
- Both the bulbs will glow with equal brightness.
Answer - Correct statement is - B1 will glow brighter than B2.
Between the given bulbs, the one with lower power will have higher resistance, according to the formula - P = V²/R.
The question states bulbs are connected in series, which indicates that both bulb are supplied with equal current. Now according to relation, P = I²R, bulb with greater resistance will experience greater power.
Hence, as mentioned above bulb B1 will have greater resistance and hence will glow brighter.
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