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julianwitkowski
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Homework Statement
A magnetic field of 0.0200 T [up] is created in a region.
a) Find the initial magnetic force on an electron initially moving at 5.00 E+6 m/s [N] in the field.
b) What is the radius of the circular path?
c) Make a sketch showing the path of the electron.
Electron Charge = q = 1.6⋅10-19
Coulomb Constant = k = 9⋅109
Homework Equations
F = qvB
F = k ⋅Q ÷ r2 → r = √ k ⋅Q ÷ E ?
F = qvB = mv2/r
a=qE/m
The Attempt at a Solution
[/B]
a) F = qvB = 1.6⋅10-19⋅5⋅106⋅2⋅10-2 = 1.6⋅10-14
b) r = √ 9⋅109 ⋅1.6⋅10-19 ÷ 1.6⋅10-14 = 314.6
I'm kinda confused as to the distinction between F = k ⋅q ⋅q ÷ r2 and E = k ⋅Q ÷ r2.
I hope I used this right, but I'm finding lots of different answers... My answer seems way to large unless it is not in meters... I'm getting 314 so I think this is wrong.
If it's wrong am I supposed to use F = qvB = mv2/r ? If this is true how am I supposed to use the rest mass of the electron?
a=qE/m and F=qvb? F=ma ... ?
For the diagram, I'm having trouble visualizing this.
If you can help me understand what the diagram should look like...
Extra kudos for a half tried paint brush image because I'm more a visual learner.
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