pic taken from cmbi.ru.nlComparing 3 force fields:
The vector direction at a point away from source is
g - towards the mass
E - towards the charge if negative.
B - clockwise if current flow into page.
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Uniform(constant) fields exist
g- a few km apart
E - within parallel plates
B- inside a solenoid carrying current.
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Force is present
g- on a mass placed at that point in the direction of g
E - on a charge placed at that point in the direction of E if the charge is positive
B - on a moving charge placed at that point in the direction determined by Flemings LHR.
