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A charged particle of mass 5g and charge...

A charged particle of mass 5g and charge `1muC` is in limiting equilibrium on a horizontal table when a horizontal electric field of `10^(4)"NC"^(-1)` s applied. Find the coefficient of friction between the table and the particle. (Take , `g=10" ms"^(-2)`)

Text Solution

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Given, `m=5g=5xx10^(-3)` kg, `q=1muC=1xx10^(-6)C`
`E=10^(4)" NC"^(-1),mu_(s)=?`
`:.mu_(s)" mg "=Eq`
`rArr" "mu_(s)=(Eq)/(mg)=(10^(4)xx1xx10^(-6))/(5xx10^(-3)xx10)=0.2`
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