Electricity/Magnetism




Inductance

5J20.20 Lamps in parallel with inductor
Use: Hook light bulb(12v or120v) in a parallel with a large electromagnet and battery. Open switch to discharge coil through bulb to produce bright flash

 
Setup: Arrange before class
Equations: V=Ldi/dt
Safety Issues: Large current when open switch


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Copyright ©1996, James Clark