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You can test a relay with and without a 9 volt battery. If you apply 9 volts to it and it's sufficient to turn on the relay, the NO switch will close and then have continuity with common. If you don't apply voltage, the NO switch will be open and not have continuity with common. You can use these continuity and resistance checks to test a relay to see if it works.
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What is the current of a 9 volt battery with a resistance of A ohms?
Current I = V/R V = 9V R = 100ohm I = 9V/100ohm = 90mA
Can you heat your water with a 9v battery?
Sure. But not much water, a 9 volt battery has very little power (energy).
A 9v battery is in a series with a 100 resistor and there is a current of 0.09 a flowing through the circuit what is used by the circuit?
0.81 APEX
What provides more energy to a circuit a 1.5 volt cell or a 9 volt battery?
A "D-size" carbon-zinc cell at 100 mA would have about ten times as much "energy" as a 9V carbon-zinc at 8mA. A battery in the AAA series would have about the same energy as a 9V, which should not be surprising since a D is 10 time larger than a AAA.
Can you charge a 6v battery with a 9v charger?
no, if you charge 9 volt battery with 12 volt battery you will destroy 9 volt battery
