A) \[5\times {{10}^{5}}\]
B) \[5\times {{10}^{4}}\]
C) \[2\times {{10}^{4}}\]
D) \[5\times {{10}^{3}}\]
Correct Answer: B
Solution :
\[{{\phi }_{B}}=NAB\,\cos \theta \] \[=20\times {{10}^{3}}\times 5\times \cos 60{}^\circ \] \[=20\times {{10}^{3}}\times 5\times \frac{1}{2}\] \[=50\times {{10}^{3}}\] \[=5\times {{10}^{4}}\]You need to login to perform this action.
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