Nothing
What happens when you inadvertently crossed the positive battery terminal from a negative to a positive and a positive to a negative.?Read more: What_happens_when_you_inadvertanly_crossed_the_positive_battery_terminal_from_a_negative_to_a_positive_and_a_positive_to_a_negative.
Voltmeter will give you opposite readings or will not work at all.
It could cause the battery to explode. It can also destroy some of the electronics in the vehicle. In other words this would be a very expensive mistake.
Nothing as long as you did not then connect the other cable.
Very Dangerous........it would be a dead short. andcouldcause a fire or explosion.
When a battery's negative terminal is not connected to a circuit, it accumulates excess electrons, creating a negative charge. This creates a potential difference between the positive and negative terminals, which is the driving force for the flow of electric current when the battery is connected to a circuit.
When the switch is closed in a simple circuit, the negative charges (electrons) flow from the negative terminal of the battery through the circuit and back to the positive terminal. This flow of electrons creates an electric current that powers the circuit components.
a negative divided by a negative is a positive
Nothing. An auto battery system is 12V DC. If both terminals aren't in the loop (positive through the current path and back to negative) nothing happens.
Becomes a negative.
Dividing a negative number by a positive number results in a negative answer.
Subtracting a negative is like adding a positive; the result will be positive.