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Calculate the magnitude of an electric f...

Calculate the magnitude of an electric field which can just suspend a deuteron of mass `3.2 xx 10^(-27) kg` freely in air.

Text Solution

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Upward force on the deutron due to electric field qE is equal to weight mg of deutron.
`qE="mg"`
`:." "E=(mg)/(q)=(3.2xx10^(-27)kg xx 9.8" m"//"s"^(2))/(1.6xx10^(-19)" coulomb")=19.6xx10^(-8)` N/C
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