EARTH SCIENCE
MAGNETISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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they get dimmer
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they get brighter
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they short circuit
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one bulb burns out
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Detailed explanation-1: -Increasing the number of bulbs decreases the brightness of the bulbs. What changes occur in the resistance in the circuit as more bulbs are added? The resistance increases. In a series circuit, adding bulbs increases the resistance in the circuit.
Detailed explanation-2: -The effect of adding a second bulb in series is to increase the overall resistance of the circuit. The resistance previously provided by the thin filament wire of just one bulb is now doubled due to the presence of two. This increase in resistance reduces the drift speed of charged particles everywhere in the circuit.
Detailed explanation-3: -In a parallel circuit, as more bulbs are added, the brightness of each bulb remains unchanged – each bulb acts independently of the other bulbs in this case.
Detailed explanation-4: -When we add a lamp in series, the resistance goes up. This reduces the current and the lamps are dimmer.