Does Really Energy is Conserved..??

A Mettalic disc of radius R is rotating about its axis with constant angular velocity $$\omega$$ Then Find The Potential difference develop between the centre and Circumference of disc.

DETAILS AND ASSUMPTIONS:

$${ { m }_{ e }=9.1\times { 10 }^{ -31 }kg\\ { q }_{ e }=1.6\times { 10 }^{ -19 }c\\ R=4m\\ \omega =\sqrt { 1.76 } rad/s\\ }$$.

NOTE: MULTIPLY YOUR ANSWER BY $${ 10 }^{ 11 }$$.

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