Download Magnetic Forces on Charged Particles Right Hand Rule #3

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Transcript
Magnetic Forces on Charged Particles
Right Hand Rule #3 Worksheet
Instructions: Point your 4 fingers in the direction of the velocity (v). Curl your 4 fingers 90 degrees in the direction of
the magnetic field (B). Point your thumb in the direction of the force (F). 2 of the variables will be given, so your hand
will tell you the answer to the third variable. Remember to use your right hand.
means into the page and
means
out of the page. Because all 3 quantities must be perpendicular to each other, all 3 axes (x,y,z) must be used. Therefore,
the 2 givens will eliminate 2 of the axes. For example, if the velocity is up the page and the magnetic field is into the
page, the answer must be either left or right. Up the page eliminates up the page or down the page as answers and into
the page eliminates into the page and out of the page as answers. If the 2 givens are parallel to each other, there will be
no force and the answer does not exist.
Section 1: Find the direction of the force if given the direction of the velocity and magnetic field.
1.
2.
B
v
3.
B
v
v
4.
v
5.
B
B
v
B
Section 2: Find the direction of the magnetic field if given the direction of the force and the velocity.
1.
2.
F
v
3.
4.
F
v
F
5.
v
v
v
F
F
Section 3: Find the direction of the velocity if given the direction of the magnetic field and the force.
1.
B
2.
F
3.
B
F
4.
F
5.
B
B
F
B
F