Purely depends on the output of the alternator. I'm presuming this is what you mean. Some vehicles require small (50A) alternators due to a lack of on board electronics. While other vehicles may require larger (110A) alternators to cope with on board electronic demand.
Hope that answers your question
typically 5-10amps. The fuse will tell you
if it is running then there is no need to charge it
There are many reasons why your car might vibrate while it is idling. It could be running too hard for example.
yes but there should be no need to do this
No , just when the engine is running
NO! Not necessary.
Definitely off.
It is not illegal to leave your car running while waiting for someone in a parking lot as long as someone (a licensed driver) is in the car.
The alternator - it provides a charge to the battery while the engine is running.
You should not drive a car that is running hot,because you can lock up the engine.
It will do no harm.
No.