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RFID+ Exam Cram by Robert Sabella, Eva Zeisel, Mark Brown

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Answers to Exam Prep Questions

1.Answer D is correct. Electrical potential, also called electrostatic potential, is the potential energy per unit of charge associated with a static electric field. Answer A is incorrect because electrical potential is not associated with a dynamic electric field. Answers B and C are incorrect; these statements do not define correctly the meaning of electrical potential.
2.Answer D is correct. Electrical potential is measured in volts, and only a potential difference (voltage) between two points has any real physical meaning. Electrical potential is not measured by multiplying the current by 110 volts and dividing the result by 12; therefore, answer A is incorrect. Electrical potential is not measured in kilowatts ...

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