Here is a Facebook video of me being tased in front of a group of police recruits while I was the deputy director of their academy in 2002. I volunteered to "take the first ride" in order to "lead from the front", as they say. Sometimes we have to do dumb things to maintain our credibility.
A typical "ride" on a taser lasts 5 seconds, unless the trigger is pulled again. You get a 50,000 volt dose of very low amperage electricity. It feels like you are being shaken by a bulldog about the size of a school bus while the current is being applied, but the instant the juice is cut off, you are immediately back to 100% capacity, as you can see by my recovery.
There is no way I could have fought through the pain and incapacitation that I experienced, but when it was finished, I could have done anything I was capable of a minute before. I was not even able to draw in a breath, let alone fight, while the current was running. But I felt pretty good when it was over.
Notice that the two recruits who are supporting me are unaffected by the taser. The shock is only felt BETWEEN the electrodes. A taser is powerful enough to put a 2,000 pound bull down...for 5 seconds; then you better run. Another tidbit that most people do not know is that, if you lined 10 people up, had them hold hands, put an electrode on each of the guys on the ends and pulled the trigger, all 10 people would take the ride.
Tasers are a wonderful tool that came around after I had retired from active work as an officer, but they are absolutely not foolproof. In the video, they have attached alligator clips to my clothing for a good contact, but in the field, if one of the two probes misses or gets caught in thick clothing, the suspect may not feel anything. And if the taser ride does not change his channel, you still have a problem on your hands when the ride is over.
https://www.facebook.com/robert.schneider.1671/videos/487762154642911/