Report Sheet Lab 7 Electromagnetic Induction

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Report Sheet Jazmin Herrera ELECTROMAGNETIC INDUCTION (LAB 7) Table 1: Speed of Magnet vs. Current when Motion is Away from Coil of Motion of Magnet (Qualitative) Maximum Current Reading (microAmps) Slow .2 Medium .6 Fast .8 Table 2: Speed of Magnet vs. Current when Motion is Toward from Coil Prediction: My prediction is that the values will be the negated numbers of table 1. Speed of Motion of Magnet (Qualitative) Maximum Current Reading (micro Amps) Slow -.1 Medium -.3 Fast -.5 Table 3: Number of Magnets vs. Current when Motion is Away from Coil Prediction: I predict that more magnets will have a higher reading. Speed of Motion of Magnet Maximum Current Reading (microAmps) 1 .1 2 .2 3 .4 4 .6

1. Explain the rationale you used to construct your predictions in Tables 2 and 3 (in the lab write-up). Did your predictions match your results? For Table 2, I made a prediction using the formulas F=qVB and F=ILB. I hypothesized that if the velocity maintains the same magnitude but reverses direction, my results will validate my prediction. Indeed, the results confirmed my hypothesis. In the case of Table 3, considering the formula F=qVB, I predicted that increasing the number of magnets would enhance the magnetic field’s strength, thereby increasing the reading. Once again, my results verified my prediction. 2. Do your results support Faraday’s Law? Use your results to explain your answer.

In Table 1, as the speed of the magnet increases, the current also increases. This is consistent with Faraday’s Law, which states that the induced electromotive force in any closed circuit is equal to the negative of the time rate of change of the magnetic flux through the circuit. In Table 2, when the magnet moves towards the coil, the direction of the current changes (as indicated by the negative sign), but the relationship between speed and current magnitude remains consistent with Faraday’s Law. Finally, in Table 3, increasing the number of magnets (which increases the magnetic field strength) also increases the current reading. This is because a stronger magnetic field will cause a greater change in magnetic flux for a given motion, leading to a larger induced current.

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