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In the shown $AC$ circuit phase different between currents $I_1$ and $I_2$ is 

• A
  $\frac{\pi }{2} - {\tan ^{ - 1}}\,\frac{{{x_L}}}{R}$
• B
  ${\tan ^{ - 1}}\,\frac{{{x_L} - {x_C}}}{R}$
• ✓
  $\frac{\pi }{2} + {\tan ^{ - 1}}\,\frac{{{x_L}}}{R}$
• D
  ${\tan ^{ - 1}}\,\frac{{{x_L} - {x_C}}}{R} + \frac{\pi }{2}$