A) \[\frac{4\phi }{\pi {{d}^{2}}}\]
B) \[\frac{2\phi }{\pi {{d}^{2}}}\]
C) \[\frac{\phi }{\pi {{d}^{2}}}\]
D) \[\frac{\pi \phi {{d}^{2}}}{4}\]
Correct Answer: A
Solution :
[a] \[\phi \,=E\,A\,\cos \,0{}^\circ \,=E\,\times \frac{\pi \,{{d}^{2}}}{4},\,\,\,\,\,\,\,\therefore \,E=\frac{4\,\phi }{\pi \,{{d}^{2}}}\]You need to login to perform this action.
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