The voltage at terminal A is -8 volts and the voltage at terminal B is 5 volts. What is the voltage difference between the two terminals?

Question

17-12-2019
Mathematics

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The voltage at terminal A is -8 volts and the voltage at terminal B is 5 volts. What is the voltage difference between the two terminals?

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mberisso mberisso · Answer 1 · 2019-12-17T18:36:29+01:00

Answer:

Voltage difference is 13 volts

Step-by-step explanation:

If voltage A ([tex]V_A[/tex]) is -8 volts, and voltage B ([tex]V_B[/tex]) is 5, the voltage difference is calculated via the formula

[tex]V_B-V_A=5\,volts \,- \,(-8 \,volts)=5\, volts\,+\,8\, volts=13\,volts[/tex]

When estimating a difference between quantity A and another quantity B it is custom to perform the difference built as the last quantity mentioned, minus the first one.