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  • A conducting of length l is rotating with constant angular velocity  about an axi

A conducting of length l is rotating with constant angular velocity \mathrm{\omega } about an axis \mathrm{OO{}'} in a uniform magnetic field B
as shown in figure. The emf induced between ends P and Q will be

Option: 1

\mathrm{\frac{1}{4}\mathrm{~B} \omega l^2}


Option: 2

\mathrm{\frac{5}{10} \mathrm{~B} \omega l^2}


Option: 3

\mathrm{Zero}


Option: 4

\mathrm{\frac{1}{2} \mathrm{~B} \omega l^2}


Answers (1)

best_answer

\mathrm{\varepsilon=\int_{-l / 4}^{3 / / 4} \mathrm{~B} \omega x d x=\frac{1}{4} \mathrm{~B} \omega l^2 }

Posted by

Pankaj

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