A uniform circular loop of radius a and resistance R is placed perpendicular to a uniform magnetic field B. One half of the loop is rotated about the diameter with angular velocity\[\omega \]as shown in Fig. Then, the current in the loop is

\[\frac{\pi {{a}^{2}}B\omega }{4R}\], when \[\theta \] is zero

\[\frac{\pi {{a}^{2}}B\omega }{2R}\], when \[\theta \] is zero

\[\frac{\pi {{a}^{2}}B\omega }{2R}\], when \[\theta =\pi /2\]

A uniform circular loop of radius a and resistance R is placed perpend

1.	A uniform circular loop of radius a and resistance R is placed perpendicular to a uniform magnetic field B. One half of the loop is rotated about the diameter with angular velocity\[\omega \]as shown in Fig. Then, the current in the loop is
A.	\[\frac{\pi {{a}^{2}}B\omega }{4R}\], when \[\theta \] is zero
B.	\[\frac{\pi {{a}^{2}}B\omega }{2R}\], when \[\theta \] is zero
C.	zero, when \[\theta =\pi /2\]
D.	\[\frac{\pi {{a}^{2}}B\omega }{2R}\], when \[\theta =\pi /2\]
Answer» E.