How does a tela coil work?

they dont

it has a discharge sphere that does that. but the electricity has to be treated by a transformer, capacitor, spark gap, primary coil and a secondary coil. after that the sphere released the charge.

when u give supply to a coil then a current will be passed through it . naturally a magnetic field is produced around the c.c.c(current carrying conductor). when u make more turns in the same...

Usually. It can also pull the signal from a spark wire.

It's a simple hall effects switch. It has a magnet and sensor. As the sensor spins on a shaft, it passes close to the magnet or the other way around. the close pass sends a signal that is used to...