Force on an electron from a magnetic field

In summary, a 17.0 g block with a charge of +1.30 x 10^-4 C is placed in an electric field of (2000 i hat - 200 j hat) N/C. The electrostatic force on the block is 2.61 x 10^-1 N, but the angle is still unknown. The equation used to find the force is F=qE and the angle can be found by taking tan^-1 of the opposite and adjacent sides or by using a diagram. The correct angle is likely to be 6 degrees or 90 degrees instead of 174.3 degrees.
  • #1
brett812718
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0

Homework Statement


A 17.0 g block with a charge of +1.30 10-4 C is placed in an electric field e vector = (2000 i hat - 200 j hat) N/C.
(a) What is the electrostatic force on the block?
the force is 2.61E-1N but I am having trouble finding the angle.

Homework Equations


F=qE

The Attempt at a Solution


180+tan^-1(-200/2000)=174.3 degrees but webassign said it was wrong.
 
Last edited:
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  • #2
sorry the title should have said force on an electron from an elecrtic field
 
  • #3
You might try writing only tan^-1 part (so you get like 6 degrees) and test this solution. Or use 90 instead of 180 deg... some diagram which angle are you looking for would be helpful.
 
  • #4
I am looking for the angle made by F and the positive x axis
 
  • #5
F is in the opposite direction of E right?
 

1. What is the definition of "force on an electron from a magnetic field"?

The force on an electron from a magnetic field refers to the force experienced by a moving electron when it is placed in a magnetic field. This force is perpendicular to both the direction of the electron's motion and the direction of the magnetic field.

2. How is the force on an electron from a magnetic field calculated?

The force on an electron from a magnetic field can be calculated using the equation F = qvBsinθ, where q is the charge of the electron, v is its velocity, B is the strength of the magnetic field, and θ is the angle between the electron's velocity and the direction of the magnetic field.

3. What is the direction of the force on an electron from a magnetic field?

The direction of the force on an electron from a magnetic field is always perpendicular to both the direction of the electron's motion and the direction of the magnetic field. This means that the force will cause the electron to move in a circular path, with its velocity constantly changing direction.

4. How does the force on an electron from a magnetic field affect its motion?

The force on an electron from a magnetic field causes it to move in a circular path, with its velocity constantly changing direction. This means that the electron will experience acceleration, but its speed will remain constant. The direction of the acceleration can be determined using the right-hand rule.

5. Can the force on an electron from a magnetic field be used to manipulate the electron's motion?

Yes, the force on an electron from a magnetic field can be used to manipulate the electron's motion. This is the principle behind many technologies, such as particle accelerators and magnetic resonance imaging (MRI) machines. By controlling the strength and direction of the magnetic field, scientists can alter the path of electrons and use them to perform various tasks.

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