Answer: 1000 V.
- A 10 V
- B 100 V
- C 110 V
- D 1000 V
Correct answer: D. 1000 V
Explanation: V<sub>s</sub> = V<sub>p</sub>·(N<sub>s</sub>/N<sub>p</sub>) = 100·(1000/100) = 1000 V.
In a pure inductor the current lags the voltage by 90° (energy is briefly stored in the magnetic field before current responds); in a pure capacitor the current leads the voltage by 90° (current must flow to build up charge before voltage rises) - the mnemonic "ELI the ICE man" keeps these straight.
Concept context
AC circuits, impedance, LCR series circuit, resonance, transformers, and power factor.