An alternating voltage $V=V_{0}$ sin ot is appliedacross a circuit. As a result, a current $I=I_{0} \sin (\omega t-\pi / 2)$ flows in it. The power consumed per cycle is

• Correct answer
  A

  zero
• B

  $0.5 \mathrm{~V}_{0} \mathrm{I}_{0}$
• C

  $0.707 \mathrm{~V}_{0} \mathrm{I}_{0}$
• D

  $1.414 \mathrm{~V}_{0} \mathrm{I}_{0}$

Hence, the correct answer is option: 'A'.