Uses of 9 volt battery and a connection wire
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volt battery maintains the potential difference across the ends of the conductor.
connection wire is used for connecting wires.
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A 9-volt battery holds the same amount of charge as 6 AA batteries, making it a much more powerful battery for Walkie-talkies and handheld talk radios. ... Smoke Alarms: One of the most common uses for 9-volt batteries are for smoke alarms or carbon monoxide detectors.
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