1.

Which of the following gives the value of magnetic field according to,  Biot-Savart?s law?     [BHU 2000]

A.    \[\frac{i\Delta l\sin \theta }{{{r}^{2}}}\]      
B.    \[\frac{{{\mu }_{0}}}{4\pi }\frac{i\Delta l\sin \theta }{r}\]
C.    \[\frac{{{\mu }_{0}}}{4\pi }\frac{i\Delta l\sin \theta }{{{r}^{2}}}\]  
D.    \[\frac{{{\mu }_{0}}}{4\pi }i\Delta l\sin \theta \]
Answer» D.    \[\frac{{{\mu }_{0}}}{4\pi }i\Delta l\sin \theta \]


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