It really boils down to the amount of power that the battery can 'store'. Smaller batteries are convenient but actually store less power than the larger, bulkier batteries do.
Since POWER = VOLTAGE x AMPERAGE and the overall power is less in the higher voltage battery, then, it must mean that the amperage, or current available in the 9 v battery is less in the long run than the 6 v battery.
For instance, an automobile battery is 12 v and has to pack quite a wallop to get a car started, yet there are much smaller 12 v batteries but they'd never be able to generate enough amperage to start the car.
A car battery has six cells each producing two volts. A 9v alkaline battery has six cells each producing 1.5 volts. There are some obvious differences, like that a car battery can put out hundreds of amps and a 9v alkaline can only put out hundreds of milliamps, a 9v battery weighs 45 grams versus 45 pounds for a car battery, and so on.
No, of course not. The 6v adapter only produces 6v, while the load expects 9v.
Substituting a 9V DC power supply for a 6V DC supply is generally not advisable, as it can lead to overvoltage conditions that may damage the device designed for 6V operation. Components may overheat or fail, and the device may not function correctly. Always check the specifications of the device to ensure compatibility with the power supply voltage. If a 9V supply is required, consider using a voltage regulator or a suitable step-down converter to safely reduce the voltage to 6V.
no, if you charge 9 volt battery with 12 volt battery you will destroy 9 volt battery
A 9 volt battery is stronger than a 1.5 volt battery because it has a higher voltage. The higher voltage allows the 9 volt battery to power more demanding devices and last longer than a 1.5 volt battery.
no
"Stronger" isn't a good word here. Given the most common D and 9V batteries, it's more a question of "different" than "stronger". The 9V has a higher voltage, while the D cell has a bigger capacity. What'll be best depends on what you need. It's like trying to decide if a sports car is better than a tractor.
No! You need fewer cells for six volts. Most 9 volt batteries have six 1.5 volt cells, but a six volt battery has four 1.5 volt cells. In theory you could open the battery up and install a tap at the fourth cell, but that is pretty hard to do.
you better not. you need a 9V regulator for this, not a resistor!
no
No.
You can buy 9V batteries from almost any supermarket