We show that the maximum impedance of the parallel combination of a resistor R, an inductor L and capacitor C, studied in a previous paper can be found analytically, without using calculus. In fact, we show that the maximum impedance of this parallel combination is just the value of the resistor R and occurs when the driving frequency is equal to 1/ . o LC These results were only demonstrated graphically in the aforementioned paper. We also provide PSpice simulations which verify the theoretical predictions.
Latin American Journal of Physics Education
Cartwright, K. and E. Kaminsky, “A further look at the “Reactance of a parallel RLC circuit,” Latin-American J. Phys. Educ., vol.5, no. 3, Sept. 2011, pp. 505-508.