the voltage and current doubles
it increases
it increases
You need to multiply the number of coulombs by the number of volts. If the two batteries are in series, then you can add the voltage of both batteries.
Before we can attempt an answer to that question, we'll need to agree on themeaning of the fuzzy, slippery phrase "amount of electricity". I'm going to interpretthat phrase to mean the current through the circuit.If the batteries are connected in series, then more batteries produce more currentthrough the circuit.If the batteries are connected in parallel, then the number of them has no effecton the magnitude of current through the circuit. But whatever the current is, morebatteries will cause it to flow in the circuit for a longer time, before they run down.
You can hook up an infinitive number of 12 volt batteries in a parallel circuit and still have 12 volts.
The number itself becomes double.
If the number of receivers (branches) in a circuit is doubled, the overall current of the circuit would also double, assuming that the voltage remains constant. This is because current is divided equally among the branches in a series circuit, so increasing the number of branches would result in each branch carrying less current if the overall current remained the same.
They double
If you increase the number of bulbs in a circuit, the resistance in the circuit will increase, causing the motor's speed to decrease. If you decrease the number of bulbs, the resistance in the circuit will decrease, causing the motor's speed to increase.
The voltage stays the same as a single battery but the amperage multiplies by the number of batteries in the circuit. Example: Three 12 volt batteries with a CCA or 300 amps each wired together in parallel will produce 12 volts and 900 CCA.
If you double the amount of gas in the same volume you will double the pressure.
the volume doubles