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GATE Electrical Engineering (EE) 2019 Solved Paper

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Question : 22

Total: 65

A co-axial cylindrical capacitor shown in Figure (i) has dielectric with relative permittivity εrl=2. When one-fourth portion of the dielectric is replaced with another dielectric of relative permittivity εr2, as shown in Figure (ii), the capacitance is doubled. The value of εr2 is___________.

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