Using Watt's Law, when solving for power, the current must be multiplied by the voltage.

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Delve into the DC Theory LMS Test with our engaging study materials. Use flashcards and multiple-choice questions, complete with hints and explanations, to ensure a comprehensive understanding and prepare effectively for your exam day.

Multiple Choice

Using Watt's Law, when solving for power, the current must be multiplied by the voltage.

Explanation:
Power in an electrical circuit is defined by Watt's Law as the product of voltage and current: P = V × I. Because of this relationship, solving for power requires multiplying the voltage by the current; the result is the power in watts. For example, at 120 V and 2 A, P = 120 × 2 = 240 W. Using addition or subtraction wouldn’t match the law, and dividing would give a quantity with a different unit (ohms, V/A) rather than watts.

Power in an electrical circuit is defined by Watt's Law as the product of voltage and current: P = V × I. Because of this relationship, solving for power requires multiplying the voltage by the current; the result is the power in watts. For example, at 120 V and 2 A, P = 120 × 2 = 240 W. Using addition or subtraction wouldn’t match the law, and dividing would give a quantity with a different unit (ohms, V/A) rather than watts.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy