Practice question
Question
Why does an AC circuit with only an inductor exhibit a "wattless" current?
Explanation
In a purely inductive AC circuit, the current lags the voltage by 90°. The power factor ( cos 90° = 0 ) is zero, meaning no average power is dissipated; the current is "wattless" because it only stores and releases energy without consuming it.
Related blogs
Guides and insights connected to this topic
Magnetic Effects of Electric Current Notes - Field Lines, Solenoid, Motor, Generator and Domestic Circuits
Explore how electric current creates magnetic fields, covering field lines, solenoids, motors, generators and domestic circuits.
Electricity Notes - Electric Current, Potential, Ohm's Law, Resistance, Heating Effect and Power
Learn the basics of electric current, circuits, potential, Ohm's law, resistance, heating effect and power in clear, concise notes.
Microbial degradation of pectin (Enzymes, Steps, Mechanisms)
What is pectin? Pectin is a complex heteropolysaccharide composed of linear chains of α-D-galacturonic acid or other similar sugar derivativ...
Discussion
Comments
Please log in to join the discussion.
Login to commentNo comments yet. Be the first to start the discussion.