\textbf{189.} A coil with 200 turns is placed in a uniform magnetic field $\mathbf{B} = 0.01\,\text{T}$ with a constant angular velocity. One of its diameters serves as the axis of rotation. The area of each turn is $50\,\text{cm}^2$ and the maximum induced EMF is 3 volts. The period of rotation of the coil in seconds is?
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(1) $\dfrac{1}{150}$ \hfill (2) $\dfrac{\pi}{150}$ \hfill (3) $\dfrac{1}{300}$ \hfill (4) $\dfrac{\pi}{300}$
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