Q-3 A) If tension surface of the globule in transformer oil is 0.15N/m, radius of globule is 2µm, the relative permittivity of the oil is 4.5 and of the globule is 9 find the critical electrical field.
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Given :
Surface tension = 0.15N/m
Radius of globule (R) = 2μm= m
Relative permittivity of oil (ξ) =4.5
Relative permittivity of globule(ξ2) =9
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