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An uncharged parallel plate capacitor is connected to a battery. The electric field between the plates is 10V/m. Now a dielectric of dielectric constant 2 is inserted between the plates filling the entire space. The electric field between the plates now is

(A) 5 V/m 

(B) 20 V/m 

(C) 10 V/m 

(D) none of these

1 Answer

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Correct option (C) 10 V/m


As voltage applied across capacitor is same i.e. 10V in both case. Therefore in both case

Ed = 10 ⇒ 10/d 

as d is constant . Therefore electric field remians the same as 10 V/m

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