Hi All, I have a very basic question in understanding alternating current. When we learn about DC circuits we would start with a simple circuit with a resistor with one current direction (either electron or hole current) and it was said that electors move in one direction. But when we start with understanding Alternating current it is said that current with varying direction and magnitude. I have a problem in visualizing this in terms of particle flow in a circuit. Would it be like particles accelarte in one direction for a fraction of second and de-accelerating and again accelrating towards other direction? Could we imagine this to a body vibrating in a periodic or simple harmonic motion. Or is there any way we can visualize the electron flow in AC circuits. Thank you.