Student Exploration: Electromagnetic Induction Gismo SWC

12.4 Student Exploration: Electromagnetic Induction B3-9k: describe, qualitatively, the effects of moving a conductor in an external magnetic field, in terms of moving charges in a magnetic field. (Faraday’s law of EMI, Generator effect and Lenz’s Law) Vocabulary you will need to employ this GISMO: Current: the quantity of charge that flows through a wire in a given unit of time Electric Field: An electric force per unit of charge Electromagnetic Induction: T he production of an electromotive force across an electrical conductor in a changing magnetic field Magnetic Field: A vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials Magnetic Flux: A measurement of the total magnetic field which passes through a given area Right-Hand Rule: The length of the vector gives the speed of rotation and the direction of the axis gives the direction of rotation according to the right-hand rule Voltage: an electromotive force or potential difference expressed in volts Generator Effect: production of electricity by magnetism Prior Knowledge Question (Do this BEFORE using the Gizmo.) A wind generator, such as the one shown at left, uses the power of wind to generate electricity. What do you think is happening inside the wind generator to convert the energy of the spinning blades into electricity? Make your best guess. I think that the reason it can generate energy is because it has something to transfer the momentum energy from the wind into an energy source that can be stored in a batt Gizmo Warm-up Usually when you experiment with circuits, you use a battery or another energy source to create a current. But is it possible to generate a current without a battery? You can find out with the Electromagnetic Induction Gizmo. : How do magnets induce electric fields? : How do magnets induce electric currents? : Can electric currents be induced by moving the wire loop? Compare and contrast the Motor effect vs the Generator effect