The longer the handle the __________ the mechanical;advantage& ;and the greater the increase in force that is applied to the
1 answer:
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Solution :
The electric field between two plates is given by
where
permitivity of free space
q = charge
A = surface area
It is given that :
the radius of the circular plates , r = 30 mm
the current, I = 0.43 mA
Therefore, Magnetic field can be found by