the last person to answer this queston is a jerk...it depends on what fuse. there are main engine fuses under the hood that could prevent the car from starting...these are the ones that dont look like fuses you can buy at walmart...they are quite large and high amperage.
usually not....the engine will start, but will run rough and/or overheat
If the car is a Diesel there is 30 amp open fuse on the firewall
Main fuse.
You know your car has blown a fuse if whatever the fuse is for suddenly quits working. For example if your radio is playing and for no reason quits it may be a fuse has blown.
Blown fuse
Replace blown fuse
Not while it is in the fuse holder. Pull it out and if you cannot look and tell if it is blown or not, test it with an Ohm meter.
Does the car door have a key slot and do you have a key for it or not
Yes, it just depends on which fuse.
things don't work is the obvious answer.
Blown fuse.