Charged particle hitting electric field at angle?

[Intle]

If I have an electric field between a cathode and an anode, are there electric field lines between the plates?
If yes, what happens if a charged particle enters the field at an angle? Is the force acting on the particle reduced?

 

[Doc Al]

If I have an electric field between a cathode and an anode, are there electric field lines between the plates?

Electric field lines are just a graphic means to visualize the electric field. So if there is an electric field, field lines can be used to illustrate it.

If yes, what happens if a charged particle enters the field at an angle? Is the force acting on the particle reduced?

What do you think? What does the direction of a field line represent?

 

[lychette]

get clear in your mind what is meant by an electric field. You have an ANODE and a CATHODE...which direction is the electric field (assuming the anode and cathode are connected to the appropriate power supply)
what does this tell you about FORCES on charged particles?

 

[mfb]

Reduced relative to what?
There is a general formula for the force on charged particles in an electric field. Does the motion of the particle go into that formula?

 

[Intle]

get clear in your mind what is meant by an electric field. You have an ANODE and a CATHODE...which direction is the electric field (assuming the anode and cathode are connected to the appropriate power supply)
what does this tell you about FORCES on charged particles?

I apologize for not being specific enough. I am asking this question because when looking at the magnetic fields and particle motion withing that field the equation, F=q*v*B*sin() can be used to take into account the particle's initial velocity vector hitting the magnetic force vector at an angle. I am wondering if there is a similar equation for electric fields since the only equation I have found so far is F=E*q which to my understanding basically just says that it does not matter if there is an initial velocity or not and/or at what angle the charged particle hits the field.
I was referring to a negatively charged electrode when I said cathode, and a positively charged electrode when I said anode. So more specifically I was thinking of a situation where the cathode is heated and electrons escape the cathode and travel towards the anode, gaining energy as they are subject to the electric force.

 

[mfb]

the only equation I have found so far is F=E*q which to my understanding basically just says that it does not matter if there is an initial velocity or not and/or at what angle the charged particle hits the field.

Correct, it does not matter, the force is always the same.

 

[Intle]

So why i

Correct, it does not matter, the force is always the same.

So why is that different in a magnetic field?

 

[jtbell]

So why is that different in a magnetic field?

Because that's the way the magnetic field works, by definition.

In general, the electromagnetic force on a charge at a specific location has a part which depends on the velocity of the charge, and a part which does not. For historical reasons, we split the electromagnetic force into two parts: the magnetic force which depends on velocity, and the electric force which does not.

 

[ZapperZ]

So why i

So why is that different in a magnetic field?

I think that you are utterly confused about the Lorentz force law.

There are TWO parts to this force law, as can be seen from the two separate terms in it:

F = qE + q v x B

Your question, i.e. a charge moving in between two plates (assuming uniform electric field), involves NO external magnetic field. So here, only

F = qE

is relevant. This problem is no different than, say, a projectile motion in a uniform gravity (i.e. first year intro physics).

Is this clear?

Zz.

 

[Intle]

I think that you are utterly confused about the Lorentz force law.

There are TWO parts to this force law, as can be seen from the two separate terms in it:

F = qE + q v x B

Your question, i.e. a charge moving in between two plates (assuming uniform electric field), involves NO external magnetic field. So here, only

F = qE

is relevant. This problem is no different than, say, a projectile motion in a uniform gravity (i.e. first year intro physics).

Is this clear?

Zz.

Yes, thank you for your answers.