May be the voltage regulator is defective, bad connection somewhere, alternator with a defective part which impair to fully charge the battery. decrease of the battery solution, short-circuit somewhere.
Start with the battery terminals and connections on the other ends of the battery wires. Check the battery itself as a loose plate in the battery could be heating up and shorting the battery for a moment causing the problem.
it might be because your car battery is low or dead
Yes, once you have jump started the car (from another car's battery), driving the car will recharge the dead battery (provided the battery is OK). This is a terrible idea and may damage the alternator. Drive the car immediately home and charge the battery with a battery charger. Alternators are designed to keep a charged battery fully charged. They are not designed to charge a dead battery. This puts way too much strain on the alternator circuits.
No. Just reconnect the battery and let the car idle for 5-10 minutes and then start driving the car. The car will relearn your driving habits after a week or two. . . .
Not likely.
Your car lost power while you were driving and it will not start now because the battery is depleted.
If the engine is running, then no. The alternator constantly keeps the battery charged.
The car will stop if the battery cable comes loose.
Recheck the wiring around the fuel pump, or check your polarities on the battery. Something is shorting out!
Yes.
No, the alternator will not charge the battery with the negative terminal loose.
Your alternator is not keeping the battery charged.