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A particle A having a charge of 2.0xx10...

A particle A having a charge of `2.0xx10 ^(-6) C` is held fixed on a horizontal table. A second charged jparticle of mass 80g stays in equilibrium on the table at a distance of 10 cm from the firsst charge. The coefficient of friction between the table and this second jparticle is `mu = 0.2`. find the range within which the charge of this second particle may lie.

Text Solution

Verified by Experts

`Q_a=2xx10^-5C, M_B=80g `
Since B is at equillibrium, `F_e=muR `
` rArr muR=mumg `
` rArr =0.2xx0.08xx9.8 `
` rArr Q_t=8.7xx10^-5xx10^-3 `
` =8.7xx10^-8C `
` Charge =+8.7xx10^-8C`
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