A current sheet with sinusoidal current produces

a-current-sheet-with-sinusoidal-current-produces-a-sinusoidal

A current sheet with sinusoidal current produces?
A. sinusoidal MMF wave lagging it by 90°
B. sinusoidal MMF wave leading it by 90°
C. trapezoidal MMF wave leading it by 90°
D. trapezoidal MMF wave lagging it by 90°
The correct choice is B. sinusoidal MMF wave leading it by 90°

A uniform current sheet produces trapezoidal MMF wave and sinusoidal current sheet produces sinusoidal MMF wave leading by 90°.