A) \[10\times {{10}^{5}}kWh\]
B) \[4\times {{10}^{-5}}kg\]
C) \[3\times {{10}^{-5}}kg\]
D) none of these
Correct Answer: A
Solution :
Radius of path \[\mu \] Magnetic field \[245\mu A,250\mu A\] The radius of circular path is given by \[240\mu A,235\mu A\] (\[260\mu A,255\mu A\] is the velocity of electron) \[\overset{0}{\mathop{A}}\,\] \[1215.4\overset{0}{\mathop{A}}\,,1.1\times {{10}^{7}}{{m}^{-1}}\] \[5863\overset{0}{\mathop{A}}\,,2.0\times {{10}^{7}}{{m}^{-1}}\]
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