मराठी

What is the order of the electric field required for field emission?

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प्रश्न

What is the order of the electric field required for field emission?

पर्याय

  • \[10^{-8}\,\mathrm{V\,m^{-1}}\]

  • \[10^{8}\,\mathrm{V\,m^{-1}}\]

  • \[1\,\mathrm{V\,m^{-1}}\]

  • \[1.602\times10^{-19}\,\mathrm{V\,m^{-1}}\]

MCQ
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उत्तर

Field emission requires a very high electric field, of the order of \[10^{8}\,\mathrm{V\,m^{-1}}\]. This field can pull electrons out of the metal.

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