A) \[\text{4}\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-6}}}\text{J}\]
B) \[\text{8}\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-6}}}\text{J}\]
C) \[\text{12}\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-6}}}\text{J}\]
D) \[\text{16}\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-6}}}\text{J}\]
Correct Answer: D
Solution :
Work done \[W=T.\,\,2A\] \[=2\times {{10}^{-2}}.\,2(4\pi \,{{r}^{2}})\] \[=2\times {{10}^{-2}}\times 2\times 4\pi \times {{({{10}^{-2}})}^{2}}\] \[=16\pi \times {{10}^{-6}}J\]
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