Area of loop inside field
`A=(1)/(2)a^(2)theta=(1)/(2)a^(2)omegat`( :. `theta=omegat)`
Flux through the loop
`phi=BA=(Ba^(2)omega)/(2)`
`e=(dphi)/(dt)=(Ba^(2)omega)/(2)`
Induecd current
Induced current
`I=(e)/(R)=(Ba^(2)omega)/(2R)`
`t=0` to `t=T,phi` increasing, `I` is anticlockwise `(+ve)`
`t=(T)/(2)` to `t=T,phi` is decreasing, `I` is clockwise `(-ve)`