Magnetic forces and charged particles

[kaanonball]

In general can someone explain to me how to use the right-hand slap rule with charged particles? specifically electrons.

also could anyone help me with the questions below;

1) A beam of electrons is directed at right angles to a wire carrying a conventional current from left to right. What happens to the electrons?

2) A beam of electrons is directed parallel to the same wire with the conventional current travelling in the same direction. What happens to the electrons?

[NE2000]

The thing you have to remember about electrons is that the movement of electrons is the equivalent to the electron current, which is in the opposite direction to the conventional current. So when you apply right-hand slap rule you have to have the thumb pointing in the opposite direction to electron movement.

With your questions, you have to consider the magnetic field produced by the wire. Let's say that the electrons are coming down (from above). The field on them would be outside the page. Then applying the right-hand slap rule you get a force on the charged particle which is to the right.

If the electrons are parallel to the wire. The field applied to them would still be coming out of the page. Using the right-hand slap rule they would be deflected away from the wire (direction depending on being above or below)

At least that's what I think...

[TrueTears]

1. To the right if the electrons hit face on. If they hit tangent to the top or bottom of the wire - no force.
2. Down the page.

EDIT: soz was confused. Was thinking too much about if the electrons hit tangent to the wire.

EDIT 2: Instead of using right hand slap rule for the electrons and remembering to reverse the direction of current, just use the left hand slap rule like they do in America.

[NE2000]

1. To the right if the electrons hit face on. If they hit tangent to the top or bottom of the wire - no force.
2. Down the page.

By down the page for 2 that's if the electrons are below the wire right?

This stuff confuses me especially when they don't give clear directions.

[TrueTears]

1. To the right if the electrons hit face on. If they hit tangent to the top or bottom of the wire - no force.
2. Down the page.

By down the page for 2 that's if the electrons are below the wire right?

This stuff confuses me especially when they don't give clear directions.

I assumed the electrons are right next to the wire, if they were underneath the wire then electrons would get pushed into the page, ie further down from the wire.

Ambiguous cause they don't specify the directions properly.

[NE2000]

1. To the right if the electrons hit face on. If they hit tangent to the top or bottom of the wire - no force.
2. Down the page.

By down the page for 2 that's if the electrons are below the wire right?

This stuff confuses me especially when they don't give clear directions.

I assumed the electrons are right next to the wire, if they were underneath the wire then electrons would get pushed into the page, ie further down from the wire.

Ambiguous cause they don't specify the directions properly.

Hold on, say the wire is running left-right along the page and the electrons are running left-right over the wire as in if you look at it from a birds-eye view you will see the electrons covering the wire (if they could, given they are not opaque). Then the electrons would be deflected out towards you right?

[TrueTears]

1. To the right if the electrons hit face on. If they hit tangent to the top or bottom of the wire - no force.
2. Down the page.

By down the page for 2 that's if the electrons are below the wire right?

This stuff confuses me especially when they don't give clear directions.

I assumed the electrons are right next to the wire, if they were underneath the wire then electrons would get pushed into the page, ie further down from the wire.

Ambiguous cause they don't specify the directions properly.

Hold on, say the wire is running left-right along the page and the electrons are running left-right over the wire as in if you look at it from a birds-eye view you will see the electrons covering the wire (if they could, given they are not opaque). Then the electrons would be deflected out towards you right?

Covering the wire on the top? If so, then yeah that's what I get as well.

If the electrons are on the bottom, then they'd get pushed "further away from you" assuming you are looking at it birds eye view, or in other words further into the page.

[kaanonball]

alright thanks guys =]

[NE2000]

1. To the right if the electrons hit face on. If they hit tangent to the top or bottom of the wire - no force.
2. Down the page.

By down the page for 2 that's if the electrons are below the wire right?

This stuff confuses me especially when they don't give clear directions.

I assumed the electrons are right next to the wire, if they were underneath the wire then electrons would get pushed into the page, ie further down from the wire.

Ambiguous cause they don't specify the directions properly.

Hold on, say the wire is running left-right along the page and the electrons are running left-right over the wire as in if you look at it from a birds-eye view you will see the electrons covering the wire (if they could, given they are not opaque). Then the electrons would be deflected out towards you right?

Covering the wire on the top? If so, then yeah that's what I get as well.

If the electrons are on the bottom, then they'd get pushed "further away from you" assuming you are looking at it birds eye view, or in other words further into the page.

OK, so basically no matter the direction, the electrons are forced away from the wire in the same plane that the electrons and wire occupied together (given that they were both parallel to each other). If the electron is above the wire, it is pushed more above the wire. If it is below the wire, it is pushed more below the wire.

[TrueTears]

1. To the right if the electrons hit face on. If they hit tangent to the top or bottom of the wire - no force.
2. Down the page.

By down the page for 2 that's if the electrons are below the wire right?

This stuff confuses me especially when they don't give clear directions.

I assumed the electrons are right next to the wire, if they were underneath the wire then electrons would get pushed into the page, ie further down from the wire.

Ambiguous cause they don't specify the directions properly.

Hold on, say the wire is running left-right along the page and the electrons are running left-right over the wire as in if you look at it from a birds-eye view you will see the electrons covering the wire (if they could, given they are not opaque). Then the electrons would be deflected out towards you right?

Covering the wire on the top? If so, then yeah that's what I get as well.

If the electrons are on the bottom, then they'd get pushed "further away from you" assuming you are looking at it birds eye view, or in other words further into the page.

OK, so basically no matter the direction, the electrons are forced away from the wire in the same plane that the electrons and wire occupied together (given that they were both parallel to each other). If the electron is above the wire, it is pushed more above the wire. If it is below the wire, it is pushed more below the wire.

Yeap exactly and you can also consider if the electrons on either "side" of the wire. Because in each of those cases, the electrons are still technically "parallel" to the wire.