phy 132 lab Current Balance

phy 132 lab Current Balance - PHY 132 Current Balance...

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PHY 132: Current Balance Student’s name: William Herzog Lab partners: Nicole Roberts Date of experiment: 3/27/08 Lab time: Thursday 6:40 TA’s name: Jianheng Liu Abstract: Current needed to create a repulsive magnetic force to counter gravitational force is directly related. More specifically the current squared plotted against weight provides an answer for μ 0.
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Objective: The objective of this lab is to better understand magnetic force. It looks at gravitational force versus repulsive magnetic force between anti parallel currents. Procedure: Use a current balance apparatus. The set up the telescope to the correct adjustments. Record the x eq which is the scale reading when the upper bar is at its equilibrium. Put weights on the pan until the bars touch which gives x t . Calculate r. Add masses to the pan for five different measurments between 20 and 120 mg. Each time change the current, I, so that the bar returns to equilibrium. Now record mass and current.
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