$A$ coil of cross-sectional area $A$ having $n$ turns is placed in a uniform magnetic field $B.$ When it is rotated with an angular velocity $\omega,$ the maximum $e.m.f.$ induced in the coil will be
- A$nBA\omega$
- B$\frac{3}{2} nBA\omega$
- C$3 nBA\omega$
- D$\frac{1}{2} nBA\omega$
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