A) \[\text{1}\text{.76 }\times \text{ 1}{{0}^{\text{9}}}\text{ C}/\text{kg}\]
B) \[\text{1}\text{.76 }\times \text{ 1}{{0}^{\text{1}0}}\text{ C}/\text{kg}\]
C) \[\text{1}\text{.76 }\times \text{ 1}{{0}^{\text{11}}}\text{ C}/\text{kg}\]
D) \[\text{1}\text{.76 }\times \text{ 1}{{0}^{\text{12}}}\text{ C}/\text{kg}\]
Correct Answer: C
Solution :
We know, \[evB=\frac{m{{v}^{2}}}{r}\] \[\Rightarrow \] \[\frac{e}{m}=\frac{v}{Br}=\frac{{{10}^{7}}}{{{10}^{-2}}\times 0\cdot 0057}\] \[\mathbf{=1}\mathbf{.76\times 1}{{\mathbf{0}}^{\mathbf{11}}}\mathbf{C/kg}\]
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