12. A solid sphere of radius R has a charge Qdistributed in its volume

1.	12. A solid sphere of radius R has a charge Qdistributed in its volume with a chargedensityp = kra, where kand a are constants andris the distance from its centre. If the electricfield at r = – is= times that at r = R. find theRvalue of1) 22)33) 2.54) 0.2
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12. A solid sphere of radius R has a charge Qdistributed in its volume with a chargedensityp = kra, where kand a are constants andris the distance from its centre. If the electricfield at r = – is= times that at r = R. find theRvalue of1) 22)33) 2.54) 0.2

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12. A solid sphere of radius R has a charge Qdistributed in its volume with a chargedensityp = kra, where kand a are constants andris the distance from its centre. If the electricfield at r = – is= times that at r = R. find theRvalue of1) 22)33) 2.54) 0.2​

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12. A solid sphere of radius R has a charge Qdistributed in its volume with a chargedensityp = kra, where kand a are constants andris the distance from its centre. If the electricfield at r = – is= times that at r = R. find theRvalue of1) 22)33) 2.54) 0.2