If an electron has a velocity to the left and there is an external magnetic field...
If an electron has a velocity to the left and there is an external magnetic field out of the page, what direction is the magnetic force on the charge?
a. Left
b. Right
c. Up (towards the top of the page)
d. Down (towards the bottom of the page)
e. There is no magnetic force
Homework Answers
Apply Fleming right hand rule
the force acting on the electron in a magnetic field is
F = q( vXB)
since charge is negative
F = -q ( -iXk) ( take left as -i and out of page is k)
=-q ( -(-j)
=-j
so direction is down (towards the bottom of the page)
option (d) is correct answer
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