MCQOPTIONS
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MCQOPTIONS
| 1. |
An electron beam has an aperture \[1.0m{{m}^{2}}.\] A total of \[6\times {{10}^{6}}\] electrons go through any perpendicular cross section per second. Find the current density in the beam. (in \[A/{{m}^{2}}\]) |
| A. | \[9.1\times {{10}^{13}}\] |
| B. | \[9.6\times {{10}^{3}}\] |
| C. | \[6.6\times {{10}^{5}}\] |
| D. | \[8.6\times {{10}^{11}}\] |
| Answer» C. \[6.6\times {{10}^{5}}\] | |