A device that stores energy in an electrical field is called what?

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 $24.99Unlock all

Pass the California Alarm Company Operator Exam. Study with flashcards and multiple choice questions, each with hints and explanations. Prepare for your exam with confidence!

Multiple Choice

A device that stores energy in an electrical field is called what?

Explanation:
A capacitor stores energy in an electric field. It has two conductors separated by a dielectric, and when connected to a voltage, charges accumulate on the plates, creating an electric field between them. The energy stored is proportional to the capacitance and the square of the voltage, given by E = 1/2 C V^2. Capacitors are used to smooth power supplies, filter signals, and create timing in circuits—common roles in alarm systems. In contrast, inductors store energy in a magnetic field, resistors dissipate energy as heat, and diodes control current flow without storing energy.

A capacitor stores energy in an electric field. It has two conductors separated by a dielectric, and when connected to a voltage, charges accumulate on the plates, creating an electric field between them. The energy stored is proportional to the capacitance and the square of the voltage, given by E = 1/2 C V^2. Capacitors are used to smooth power supplies, filter signals, and create timing in circuits—common roles in alarm systems. In contrast, inductors store energy in a magnetic field, resistors dissipate energy as heat, and diodes control current flow without storing energy.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy