Coil Definition and 864 Threads

I want to build a tesla coil for my school's science fair. Is there some way you can make the Tesla coil safe and not extremely dangerous and deadly? I don’t want to kill myself :eek: ! Does anyone have any tips or advise? ~Thanks

Voltage pulse from ignition coil ?? Hi, Does anyone know the voltage of the pulse from a typical ignition coil? thanks. tyler

Yea, I just had a pretty weird idea, can we instead use water instead of a coil since water is a conductor as well (impure water that is.). Can we instead rely on convection currents or water waves to power this generator?

A coil of wire is formed of many loops. These loops, though tracing a circular path, may be though of as being parallel to each other. We know that whenever parallel wires carry and electric current, there will be a mechanical force generated between those two wires. When electric current is...

A friend and I are trying to build a radio controlled airplane, but an LCR circuit tuner would be too heavy. Does anybody know of a way to make a tuner without an inductor coil? Any help would be appreciated.

Hello, I have a question concerning electromagnet coils and static electricity. If one were to generate a static charge and store it up some how (like in a Leyden jar or something), and that charge was then dumped over a small electromagnet, would there be enough energy to provide a small...

A small coil is laid on a flat table and a magnet is held vertically over the magnet. Both are stationary. I move the magnet so that it passes the coil and then held it stationary again. I move the magnet over the coil and hold it stationary there again. What am I supposed to conclude about the...

Please tell me if this is right: A coil contains 100 turns of wire in a loop 15cm in diameter. The loop is placed between the poles of a large electromagnet B= 1.0 T, with the plane of the loop perpendicular to the field. If the magnetic field is steadily reduced from 1.0 T to 0 in 16...

Ok, so here's the problem: Induced EMF A 5.80 cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.770 T pointing up. During the course of 0.140 s, the field is changed to one of 0.240 T pointing down. What is the average induced emf in the...

the self-capacitance and self-inductance of a coil? Are there equations for these where I won't need to know the number of turns? Since I think #2 is no, are there meters I can buy to measure this, or can I use the measurements from a volt/resistence meter I already have?

A question, I have a plastic disc with a coil wound around is axis of rotation. The coil carries current I. Now the disc carries charges at its circumference. Now the current flowing in the coil is brought to 0 instantaneously. This creates Electric Field to be produced that travel in...

I'm stumped by the following problem. To determine the inductance of a coil used in a research project, a student first connects the coil to a 12.0V battery and measures a current of 0.630 A. The student the connects the coil to a 24.0-V(rms), 60.0-Hz generator and measures an rms current of...

my uncle was describing something that showed light traveling at a slow speed and i had no idea how it worked. he said it was a clear solid plastic like tube wrapped around in a coil and when you shined a light in one end you could watch it enter the coil, spin around the coil, and then exit...

if we were to insert a search coil inside a solenoid, (plane of coil perpendicular to B), would the induced current change direction in the middle of the solenoid ? it would have to wouldn't it since it would now be approching the opposite pole --- ??