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Physics circuitry questions, series and parallel, please help!?
Okay so I`m doing a finals review for physics and this section of it I`ve just forgotten and I`m stumped so I really need your help!
(and btw there isn`t a specific voltage or anything) (and these questions all include three bulbs/resistors and one battery only)
When is a light bulb brighter or dimmer depending on location- closer or further from battery?
In a parallel circuit with 3 parallel bulbs/resistors, does cancelling out one bulb make the others go out as well?
If there is a circuit that has two parallel bulbs and one that isn`t, will cancelling the bottom parallel bulb take out the top?
Which arrangement would make all the bulbs have the same brightness...parallel, series, or series with two parallel bulbs?
Thanks so much
1 Answer
- Kevin BLv 47 years agoFavorite Answer
First one: Closer to the battery, provided the further it is, the more resistances there are between the bulb and the source of energy.
Second: No it won't, since the circuit is in parallel, current will just bypass this part of the circuit and go straight to the next bulb.
Third: Same thing as before, the part of the circuit will be bypassed, provided its in parallel.
Fourth: All the bulbs plugged in parallel. If you have one series bulb and then two parallel bulbs the first one will be brighter and the two others will shine the same but a bit dimmer than the first one.
Source(s): Studied electricity.
