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