# lab 4 - Jody Lewin Lab Partner Juliana Petritis Lab TA...

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Jody Lewin Lab Partner: Juliana Petritis Lab TA: Laxman Mainali Lab 3: Magnetic Current-Current Force 29 February 2008 Magnetic Current Relevant Formulas: 1. B = μ 0 2. F = ILB 3. F = μ 0 LI² 4. F = mg 2πr 2πr 5. r = d + (h(upp) – h(down)) x l(pivot wire) . 2L(mirror – meter stick) μ 0 = 4π x 10 -7 Tesla-meter / amp 1. B is the magnetic field produced by the current carried on a long wire. 2. When a second wire is parallel to the first, a force (F) is produced. L is the shorter wire. 3. Combining formulas one and two we derive this formula replacing the B in formula two for formula one. Proceedure: Adjust the wires so they are 0.5cm to 1.0cm apart. With the laser on, adjust the system so the laser hits the mirror and reflects back onto the meter stick. Measure the distance between wires (r). After determining the voltage system is working, add a staple to the wire and increase the voltage until the laser returns to the same place on the meter stick. Record the current.

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## This lab report was uploaded on 04/16/2008 for the course APHY 151 taught by Professor Lanford during the Spring '08 term at SUNY Albany.

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lab 4 - Jody Lewin Lab Partner Juliana Petritis Lab TA...

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