Question

Q. 20 Single Choice
Rank the bulb (A, B, C, D) in the following circuit
according to their brightness, from brightest to dimmer.
(Assume all bulbs are of same rating)
निम्न परिपथ में बल्ब (A, B, C, D) को इनकी चमक के अनुसार अधिक
चमकदार से कम चमकदार की ओर श्रेणीबद्ध कीजिए (माना सभी बल्बों
के अंकन समान है)​

Answer 1

Answer:

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Answer 2

Explanation:

Placing cells in series increases the voltage in the circuit by 1.5 V for each cell. Increasing the voltage increases the brightness of the bulb. When a bulb in a series circuit is unscrewed all bulbs in the circuit go out. Increasing the number of bulbs in a series circuit decreases the brightness of the bulbs.