The current in Amperes used in resistance spot welding

Home » Materials Science and Manufacturing Engineering » Materials Science and Manufacturing Engineering Miscellaneous » Question

The current in Amperes used in resistance spot welding of plain carbon steel sheets (1 to 3 mm thick) lies within the range

1. 10-50
2. 50-500
3. 500-5000
4. 5000-5000

Correct Option: D

Very high current is used in air gap.