Physics Questions (Basic)

2009-10-26 7:45 pm

Hey, I am new to physics, this is my first year in high school. I know not much about physics, but I want to ask a dumb but important question.
Will the Current change between the negative terminal of a batter and the lightbulb (the lightbulb is the consumer of electricity) compare to positive terminal of the battery?

So eh thx to whoever is trying to help.
And again, I am new to physics, so PLEASE try to be not tough on me please, like copy and paste wikipedia crap and all that big words :)
Thx

回答 (1)

天同

2009-10-26 8:34 pm

✔ 最佳答案

No. What comes out from the positve terminal of a battery is exactly the saem as what goes back to the negative terminal of a battery. This is the Conservative of Charge Law.

Current is the flow of charges. The amount of charges leaving the positive pole of a battery must be equal to the same amount of charges entering into the negative terminal, as there is no accumulation of charge in the circuit (in your case, it is the light bulb that doesn't accumulate chargess, otherwsie the bulb would become a "charged body" after switching on. Buth this is not observed in reality). The flow of charges has to follow the conservation law.

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