I would run my metric something like, "How likely is it my former employer can make trouble for me if i anger them, weighed by how vulnerable to said trouble i am" as No. 1 No. 2 would be a weighing of how pressing it is for me to start second job. I wouldn't give much importance to the kiss off of leaving a job or boss you hate, nor saving the bacon of a boss/company/coworkers you like. They'll typically toss you to the curb without a second thought on zero notice. If that hasn't been the case, if the company/boss treats people better than that, then if possible, reciprocate. This isn't quite what you asked, so I'd just say.... "I gave the standard 2 weeks" if asked in the future is a reasonable defense if you're ever cornered on it for some reason. I guess if you're a project manager or something that otherwise accepts long term responsibility as part of the job description, that could change my answer.
2 weeks is enough time. If you like them enough and wanted to truly get everything handed off within a certain time frame, then you could even provide longer notice. If you don't care and aren't concerned about burning bridges then you can just leave today. It's really up to you, but 2 weeks is more than enough and that's standard here.
Depends on the job, but for most normal jobs 2 weeks is sufficient. I kind of feel like if you were in the type of position that requires more notice, you'd know it. They typically mention it at the start of your employment if that's a thing.
To me it depends on how they are situated on the org chart. Anyone salaried should be a month. Hourly two weeks is all good if you worked for me.
Two weeks is two weeks more than your current employer would give you if they decided it was time to part ways, so yes, it is more than sufficient. In addition, it’s the generally accepted standard amount of notice.
If you're not sure if two weeks notice is ample, then the answer is probably yes, 2 weeks fine. additionally, if your job position can be filled by coworkers after a couple hour debrief, then you should be able to quit immediately.
Entirely subjective. At a ‘regular’ medium-skilled job two weeks is normal. As you climb the career ladder, become an expert and/or enter leadership, you consider how your exit will affect your peers and your professional network. IMO you always want to leave a good place on a good note. So if you think a transition will take longer than two weeks, take longer. Unless the new place needs you right away then you make yourself available beyond two weeks for questions or whatever.