CIE physics paper 2

[cs]

Nov 2002

Q6) why is the arrow in upward direction ( as what i noticed, its from higher potential to lower), any one care to explain, here's the question attached with answer

[nid404]

 electron has a negative charge. Direction of force on electron will be towards the positive plate.

[cs]

electron has a negative charge. Direction of force on electron will be towards the positive plate.

+rep

[*Hope*]

Unlike charges attract and like charges repel

[Deadly_king]

Nov 2002

Q6) why is the arrow in upward direction ( as what i noticed, its from higher potential to lower), any one care to explain, here's the question attached with answer

Actually the electric field is downwards from higher potential to lower potential. When the electron penetrates the electric field perpendicularly an electric force acts on it. This electric force is always opposite to the direction of the electric field for an electron.

Therefore the electron proceeds through the electric field between the two plates with a slight parabolic path towards the positively charged metal plate. Then it exits the field in a a straight line tangential to the point it exits the field.

But its easier to understand the way Garfield explained, i.e being negatively charge it is attracted to the positively charged metal plate.

[*Hope*]

+rep Deadly_king Very informative mA

[Deadly_king]

+rep Deadly_king Very informative mA

Thanks.......though you said almost the same thing in only one line

[*Hope*]

Thanks.......though you said almost the same thing in only one line

LOL! Now Cs has more ways to learn it..the easy and the hard way

mA! Keep up this amazing work

[Deadly_king]

LOL! Now Cs has more ways to learn it..the easy and the hard way

mA! Keep up this amazing work

Hahaha........yeah i guess so 

Sure........i actually love helping and it also helps me revise

[*Hope*]

I really am proud that this forum has very helping members like you

And insA Allah will help you as you are helping others..and yea trueeee...when you explain and help someone..the info sticks to ur mind and reminds you if u know the topic well or not insA

[Deadly_king]

You know what??

The way you express yourself actually makes me want to help even more.........its very encouraging

Its a pleasure to be acquainted to such a nice person............you'll certainly be a good mod

[cs]

Thanks to all of you.. I am really glad that i found you guys in this forum..

[cs]

Thanks to all of you.. I am really glad that i found you guys in this forum..
although you guys made me feel that i am so weak in physics..

[Deadly_king]

Nan.......that was not our intention! Far from that we'll help you in any way we can

There's no shame in not knowing something

[*Hope*]

You know what??

The way you express yourself actually makes me want to help even more.........its very encouraging

Its a pleasure to be acquainted to such a nice person............you'll certainly be a good mod

Thank you..I am flattered I like that I encourage to help