Why electrons move up if the Magnetic field is Horizontal?

In summary, the force exerted on an electron by a magnetic field is determined by the angle between the direction of the motion and the electric field. In the first video, where the motion is vertical, there is a horizontal force. In the second video, where the direction of motion changes, the horizontal component of the velocity does not lead to a force as it is along the electric field. The Lorentz force equation for a point particle is given as $\vec{F}=q \left (\vec{E}+\frac{\vec{v}}{c} \times \vec{B} \right)$.
  • #1
mo0nfang
13
0
<--Why electrons move up if the Magnetic field is Horizontal?

at 0:14 <-- the Magnetic field is Horizontal but the electrons are also moving horizontally...
 
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  • #2
The force is perpendicular to the motion and perpendicular to the electric field, with its strength proportional to the sine of the angle between the two directions.
In the first video the motion is vertical, therefore there is a horizontal force.
In the second video the direction of motion changes, but the horizontal component is along the electric field - it does not lead to a force. Only the vertical component of the velocity leads to a force.
 
  • #3
I guess you mean magnetic field? The Lorentz force on a point particle is
$$\vec{F}=q \left (\vec{E}+\frac{\vec{v}}{c} \times \vec{B} \right).$$
 

Related to Why electrons move up if the Magnetic field is Horizontal?

1. Why do electrons move up if the magnetic field is horizontal?

Electrons move up because they are negatively charged particles and are influenced by the direction of the magnetic field. In a horizontal magnetic field, the field lines are perpendicular to the direction of motion of the electrons, causing them to move upwards.

2. How does the direction of the magnetic field affect the movement of electrons?

The direction of the magnetic field determines the direction in which the electrons will be deflected. If the magnetic field is perpendicular to the motion of the electrons, they will be deflected at a right angle to their original path.

3. Why do electrons move in a curved path in a horizontal magnetic field?

Electrons move in a curved path because they experience a force called the Lorentz force, which is perpendicular to both the direction of motion of the electron and the direction of the magnetic field. This force causes the electrons to move in a circular or helical path.

4. Can electrons move in a horizontal magnetic field without any external force?

No, electrons cannot move in a horizontal magnetic field without an external force. The magnetic force acting on the electrons is always perpendicular to their motion, so they cannot move in a straight line without an additional force to balance out this deflection.

5. How does the strength of the magnetic field affect the movement of electrons?

The strength of the magnetic field determines the amount of force exerted on the electrons and therefore, the curvature of their path. A stronger magnetic field will result in a tighter curve, while a weaker field will result in a wider curve.

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