You haven't mentioned the voltage or the Amp-hour capacity of the battery.
In order to estimate the life of the battery, we need to know both of those,
and we also need to be assured that the battery voltage is the same as the
designed operating voltage of the appliance.
The positive terminal of the battery would be connected to the positive terminal of the ammeter. The load would then be connected between the two negative terminals, positive side of the load being connected to the negative side of the ammeter.
a battery and a resistor connected together.
You would short out the battery. If it was a car battery capable of 300 amps and the wire was big enough, the battery could explode.
A battery stores chemical energy and converts it into electrical energy when connected to a circuit.
To determine how long a 100Ah battery will last with a 20W light, you first convert the wattage to amps. Using the formula: Amps = Watts / Volts, and assuming a 12V battery, the light draws about 1.67A (20W / 12V). Therefore, a 100Ah battery would last approximately 60 hours (100Ah / 1.67A) under ideal conditions, without accounting for factors such as battery efficiency and depth of discharge.
The voltmeter would read 12 volts. An ammeter connected to to battery would only read 4 amps (12 volts divided by 3 ohms =4)
I am not completely sure on why you battery in your Mustang would be smoking only when connected to the starter. I would take into a shop and have them look at it.
The current depends on what is connected to the battery's terminals. If nothing is connected to it, then there is no current, and the battery lasts quite a while. In general, the current is 1.5/resistance of the external circuit connected to the battery until that number gets too big, and then the voltage of the battery sags, because it can't deliver that much current.
They can visit an electrical appliance store and purchase one from there. Alternatively, you can order on a browser and look at with Sony battery charger you would like to buy.
That would be a battery.
Overcharging by the alternator or if it is connected in reverse polarity.
A simple series circuit is typically used in a battery-operated torch. This circuit allows for the flow of current from the battery through the light bulb, providing illumination. The components are connected in a loop, where the positive terminal of the battery is connected to the light bulb and then back to the negative terminal of the battery.