Question: If J = (2 cos 0 a, + sin 0 ag) A/m, calculate the current passing through (a) A hemispherical shell of radius 20

If J = (2 cos 0 a, + sin 0 ag) A/m,

If J = (2 cos 0 a, + sin 0 ag) A/m, calculate the current passing through (a) A hemispherical shell of radius 20 cm (b) A spherical shell of radius 10 cm

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