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Sav [38]
3 years ago
12

A horizontal metal bar oriented east-west drops straight down in a location where the earth's magnetic field is due north. as a

result, an emf develops between the ends. which end is positively charged?
Physics
1 answer:
amid [387]3 years ago
5 0

Metal bar is aligned along East- West direction and it is dropped vertically down

So its velocity is along -Z direction,

Now the Earth's magnetic field is towards north so its towards +Y direction

now we have formula for force on a moving charge

F = q(v X B)

v = - z direction

B = + y direction

now by the above formula

F = q(v(-k) X B(j))

F = qvB (i)

So force is towards East

so all positive charge is towards East end


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