🔍 Key Concepts

• Voltage as a measure of electrical energy per unit charge • Relationship between voltage, current, and resistance (Ohm’s Law) • Common alternative terms used for voltage in basic electrical theory

💭 Think About

• Think about how textbooks sometimes define voltage in words rather than using the symbol V—what phrase do they often use? • Consider whether each choice is truly a standard, widely accepted synonym or description for voltage, or if it describes something more specific. • Ask yourself if one of the options is actually a broader term that already includes the others, or if they are clearly different concepts.

✅ Before You Answer

• Verify which terms your electrical theory or marine engineering references use as direct synonyms for voltage. • Check whether "difference of potential" and "electromotive force" (EMF) are both used to describe voltage in introductory materials. • Be sure that any term involving current (I) is not being confused with voltage, which relates to potential, not flow.