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2006-08-06 18:36:17 · 15 answers · asked by Anonymous in Science & Mathematics Physics

15 answers

Conventionally it was believed that electricity flowed from the positive to the negative terminal.Thus the direction of conventional current is from the positive to the negative .But later it was found out
that electrons flow from the negative to the positive and THEY are the ones with the charge.Therefore current actually flows from negative to positive and not vice versa.Since you are probably in school,the direction of conventional current might have been taught to you,you might learn about it in higher grades\classes

2006-08-06 19:34:23 · answer #1 · answered by Anonymous · 0 0

Electrical current is the movement of electrical charge.

As it turns out, electrical current goes BOTH ways.

As, say, a capacitor, discharges, the positive part becomes more negative, and the negative part becomes more positive.
So, really, current goes both ways; all that changes is the type of current.

Positive current goes from positive to negative - thus, the negative side of the capacitor slowly becomes more positive.
Negative current goes from negative to positive - thus, the positive side slowly gets more negative.
Both are happening at the exact same time.

In terms of actual, physical, movement, the only thing moving in electrical current is the electrons. Since the electrons have a negative charge, they are what constitutes the negative current - they are what's going from negative to positive.

Since the negative side is losing electrons, it slowly gets more positive. Thus, we say that there is a flow of positive charge to the negative side from the positive, even though the only physical movement is electrons going to the positive side..

2006-08-06 19:01:24 · answer #2 · answered by extton 5 · 0 0

I assume you mean why current doesn't follow the electron's flow from the negative terminal (where they are repulsed) to the positive terminal (where they are attracted). That's strictly convention. You can think of it as "hole flow." When an electron moves toward the positive terminal, the empty spaces or holes flow toward the negative terminal.

2006-08-06 19:01:27 · answer #3 · answered by Kurt 3 · 0 0

flow of current is bcoz of electrons.as electrons are negatively charged so they are attracted towards positive terminal

we can make current flow from negative to positive terminal by connecting a battery of higher voltage

2006-08-06 18:57:59 · answer #4 · answered by kav 2 · 0 0

in a circuit the negative terminal of battery has abundance of electron whereas the positive terminal has none.when the circuit is closed,due to the difference in potential electron from negative terminal move towards positive thus causing the current to move in d opposite direction i.e.from positive to negative, but inside the battery the flow of electron is from positive to negative and current flows in its opposite direction so there u go current does flow from negative to positive but only inside the battery.

2006-08-06 20:08:29 · answer #5 · answered by anie 1 · 0 0

It does. electrons move towards positive (unless you are in the Navy then current flows from positive to negative =)

2006-08-06 18:43:38 · answer #6 · answered by Daniel H 5 · 0 0

Electricity does flow negative to positive.

And sometimes positive charges going positive to negative.

2006-08-06 18:41:25 · answer #7 · answered by LorettoBoy 4 · 0 0

I'll give you a simple way to understand electricity. Think of electrons as water drops and a thread as the conductor. If we wetten the thread and hold it slanted, the water droplets move from the higher end to the lower end. The difference between the heights of two sides is the P.D. The speed of water droplets is the Elec. Curr. The friction is the resistance. Now why does the water not go back?

2006-08-06 19:33:39 · answer #8 · answered by Anonymous · 0 0

the whole thing about flow of electrons is not about who is positive & who is negative
scientists supposed that electrons flow from +ve to -ve

if i am a scinetist, i can say that "electrons r flowing from X to Y"
thats right, i named the positive pole X & the negative pole Y

we just follow the scientists says
they r only signs to compare between different charges

i hope u got ur point from my explanation

2006-08-07 01:57:02 · answer #9 · answered by Kevin 5 · 0 0

the electrons that constitue the current move from negative to positive.from this veiwpont the currnt must also be taken to move from neg to posi. but as a convention, it is taken to flow from positive to negative.i agree it is a bit confusing at first, i used to blame the scientiets for making such an lopsided convention.

2006-08-06 18:46:20 · answer #10 · answered by Axy 1 · 0 0

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