Potential difference between the ends of a rod rotated about a point between its ends

1. A.
   $\dfrac{5Bl^2\omega}{6}$
2. B.
   $\dfrac{6Bl^2\omega}{5}$
3. C.
   $\dfrac{Bl^2\omega}{6}$
4. D.
   $\dfrac{Bl^2\omega}{3}$

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1. A.
   $V_A - V_O = \dfrac{B\omega L^2}{2}$
2. B.
   $V_O - V_C = \dfrac{7B\omega L^2}{2}$
3. C.
   $V_A - V_C = 4B\omega L^2$
4. D.
   $V_C - V_O = \dfrac{7B\omega L^2}{2}$

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