In the equation I = E/R, which quantities are related?

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Study for the Con Edison Basic Electric Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

In the equation I = E/R, which quantities are related?

Explanation:
This equation is a direct form of Ohm’s law, showing how current, voltage, and resistance relate. It tells you that current equals voltage divided by resistance, so the three quantities involved are current, voltage, and resistance. You can see how changing voltage or resistance affects the current: increasing voltage raises current, while increasing resistance lowers it (for a fixed voltage). The units are amperes for current, volts for voltage, and ohms for resistance. While you could derive power from these same quantities with P = VI or P = I^2R, this specific formula links only current, voltage, and resistance.

This equation is a direct form of Ohm’s law, showing how current, voltage, and resistance relate. It tells you that current equals voltage divided by resistance, so the three quantities involved are current, voltage, and resistance. You can see how changing voltage or resistance affects the current: increasing voltage raises current, while increasing resistance lowers it (for a fixed voltage). The units are amperes for current, volts for voltage, and ohms for resistance. While you could derive power from these same quantities with P = VI or P = I^2R, this specific formula links only current, voltage, and resistance.

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