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ISTITUTO COMPRENSIVO TRENTO 5 Scuola secondaria di primo grado “G. Bresadola”

ISTITUTO COMPRENSIVO TRENTO 5 Scuola secondaria di primo grado “G. Bresadola”. OPEN DAY SCIENZE. 16 dicembre 2015. ELECTRIC GENARATOR. Francesco Biscaglia e Sergio Grilo Guarino classe 2^ bilingue. We want to build an electric generator following Faraday’s law. ?. Purpose. Question

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ISTITUTO COMPRENSIVO TRENTO 5 Scuola secondaria di primo grado “G. Bresadola”

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  1. ISTITUTO COMPRENSIVO TRENTO 5 Scuola secondaria di primo grado “G. Bresadola” OPEN DAY SCIENZE 16 dicembre 2015

  2. ELECTRIC GENARATOR Francesco Biscaglia e Sergio Grilo Guarino classe 2^ bilingue

  3. We want to build an electric generator following Faraday’s law ? Purpose Question Can we make electricity from magnets and copper wires

  4. Hypothesis We hypothesize that our device using magnets and copper wire will produceelectrical current and the bigger the change we have in the magnetic field, the greater voltage is produced. The electrical generator

  5. Materials Copper wire coil of a relay 4 magnets Lego bricks + gears Hand blender with different speeds Voltmeter Circuit board with: a. bridge rectifier, converts AC current (alternating current) in variable current with same direction b. electrical capacitor, stabilizes the voltage and thus the current c. LED (1.5V), shows the intensity of the current or resistor (10kW, R2=56W), closes the circuit

  6. Procedure 1. we built the structure using Lego bricks and gears 2. we put in their positions a copper wire coil of a relay and 4 magnets around a bar, alternating the poles (perpendicularly to each other) 3. we created a circuit board with the LED, a bridge rectifier and an electrical capacitor 4. using a hand blender at different speeds, first with the LED and then with resistors instead of the LED (R1=10kW, kiloOhm, R2=56W, Ohm), we took the measurements with a voltmeter (Voltage1, Voltage2, Voltage3)

  7. Variables Variables to keep the same: the copper wire stays in the same position with respect to the magnets. Variables to change (independent variable): the velocity of the motor spinning the magnets (the velocity of change in magneticfield). Control variables (environment variables): the voltage [V] first with the LED and then with resistors instead of the LED (R1=10kW, kiloOhm, R2=56W, Ohm)

  8. Results The graphs are almost lines and this demonstrates Faraday’s law: the quicker the magnetic field changes, the greater amount of electricity (voltage) is produced. We noticed that the Turbo speed of the hand blender is not proportional to the others, so the results are much higher.

  9. Conclusions Answer to your original question Yes we can make electricity from magnets and copper wires thanks to MrFaraday@gmail.com! Was your hypothesis correct or incorrect? If not why? Yes our hypothesis was correct. If you were to complete this experiment again, what changes would you make? How would you improve this experiment? We would try to move the wire and not the magnets because maybe we could get more voltage

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