Notes of Chapter 16: Alternating Current of “Physics XII” for FSc Part 2 published by Punjab Textbook Board, Lahore. These notes are very helpful to prepare Physics paper of FSc Part 2 for Federal Board, Multan Board, Faisalabad Board, Sargodha Board, Gujranwala Board, DG Khan Board, Rawalpindi Board or any other board of Punjab, Pakistan.

The current that is produced by a voltage source whose polarity keeps on reversing with time is called alternating current.The value of the voltage or current that exist in a circuit at any instant of time t measured from some reference point is known as its instantaneous value.

• Alternative current
• Advantage of AC
• Flow of AC
• Different terms of AC
• AC circuit
• AC through a resistor
• AC through an inductor
• Impedance
• R-C and R-L series
• Power in AC circuit
• Resonance
• Parallel resonance circuit
• Three phase AC supply
• Principal of metal detectors
• Principal of generator
• Reception of emf waves
• Modulation
• Comparison between A.M and F.M