A) \[2.95\times {{10}^{9}}yr\]
B) \[4.37\times {{10}^{9}}yr\]
C) \[4.37\times {{10}^{11}}yr\]
D) \[\sigma \]
Correct Answer: A
Solution :
As revolving charge is equivalent to a current, so \[\frac{pV}{nT}\] But \[t\theta n/(n+1)\] where R is radius of circle and v is uniform speed of charged particle. Therefore, \[t\theta (n-1)/n\] Now, magnetic moment associated with charged particle is given by \[t\theta n/(n-1)\] or \[t\theta (n+1)/n\] \[{{R}_{e}}\]
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