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How do you figure out the voltage of something?

Updated: 8/19/2019
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13y ago

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Most electrical devices are labeled with their respective voltages. If not the manufacturers website should allow access to the specifications ( you'll need the part number). Another way to determine the voltage is with a volt meter. Put he positive lead at the input of the device when it is turned on and the negative lead at the devices ground. If the device has the power and current ( watts and amperes respectively ) marked on it you can determine the voltage by using the equation;

v = w / a where v is the voltage, w is the power in watts, a is the current in amperes.

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Q: How do you figure out the voltage of something?
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