A parallel circuit at resonance has ITANK = 1.00 A, ILINE = 0.05 A, Q = 20, and a voltage across the tank of 500 V. What is the impedance of the tank?
A) 10,000 Ω
B) 25,000 Ω
C) 50,000 Ω
D) 70,000 Ω

Question

Quizplus · Accepted Answer

The impedance of the tank (Z_tank) can be calculated using the formula Z_tank = V_tank / I_tank. Given V_tank = 500 V and I_tank = 1.00 A, Z_tank = 500 V / 1.00 A = 500 Ω. However, the quality factor Q = 20 implies that the impedance is Q times the impedance at resonance, so Z_tank = 500 Ω * 20 = 10,000 Ω.

A Parallel Circuit at Resonance Has ITANK = 1