Angular velocity of a body from the power supplied, moment of inertia and angular acceleration

1. A.
   $P(I\alpha)^{-1}$
2. B.
   $P^{-1}(I\alpha)^{-1}$
3. C.
   $P\alpha^{-1}I$
4. D.
   $PI\alpha$

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1. A.
   $\dfrac{I}{P\alpha}$
2. B.
   $\dfrac{\alpha}{PI}$
3. C.
   $\dfrac{P\alpha}{I}$
4. D.
   $\dfrac{P}{I\alpha}$

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