A solid sphere of radius \( r \) has a charge \( Q \) distributed in its volume with a charge de... VIDEO
A solid sphere of radius \( r \) has a charge \( Q \) distributed in its volume with a charge density \( \rho=k r^{a} \) where \( k \) and \( a \) are constants and \( r \) is the distance from its centre. If the electric field at \( r=R / 2 \) is \( 1 / 8 \) times that at \( r=R \), find the value of \( a \).https://bit.ly/YTAI_PWAP https://www.pw.live
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