Question

If J= (1/r^3)(2cosθar+sinθa) A/m2, calculate the current passing through a hemispherical
shell of radius 20cm, 0 ≤ θ ≤ π/2, 0 ≤ ϕ ≤ 2π.

Answer 1

Answer:

Diagonal = 12 cm

\begin{gathered}diagonal = \sqrt{2} x \\ .12 = \sqrt{2} x \\ x = \frac{12}{ \sqrt{2} } \\ x = \frac{ \sqrt{2} \times \sqrt{72} }{ \sqrt{2} } \\ x = \sqrt{72} .\end{gathered}

diagonal=

2

x

.12=

2

x

x=

2

12

x=

2

2

×

72

x=

72

.

hope it will be helpful

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