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Magnetic Forces I writeup

# Magnetic Forces I writeup - Pooja Parekh Magnetic Forces I...

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Pooja Parekh Magnetic Forces I PHY 134 Section 2 Abstract The purpose of this lab was to determine the vertical component of Earth’s Magnetic  Field through measurement of a current-carrying wire that is stretched between two supports.  The formula for magnetic force is F= l IxB. A 20 g mass was attached to the end of the wire, thus  resulting in mechanical tension equivalent to T(x)=cos =T θ 0 . The maximum deflection is  calculated using the equation y max =(IB vert /T 0 )/.5L 2 . The current will be measured to find y max  to  determine B vert . Earth’s magnetic field is caused by the dynamo theory in which the motion of a  conductive body in the presence of a magnetic field regenerates the magnetic field. The liquid  iron in Earth’s outer core is what drives the dynamo action. The convection of molten iron along

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