| Answer | Crossword Clue |
|---|---|
| TESLA | ... coil (electrical device) |
| SOLENOID | Electrical coil. |
| TESLA | Electrical coil inventor |
| secondaries | A secondary coil or winding in an electrical transformer |
| autotransformer | An electrical transformer that has a single coil winding, part of which is common to both primary and secondary circuits |
| reactors | device (as a coil, winding, or conductor of small resistance) used to introduce reactance into an alternating-current circuit |
