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A series R-C circuit is connected to AC ...

A series R-C circuit is connected to AC voltage source . Consider two cases , (A) when C is without a dielectric medium and (B) when C is filled with dielectric of constant 4. The current `underset(R )(I)` through the resistor and voltage `underset(C )(V)` across the capacitor are compared in the two cases. Which of the following is/are true

Text Solution

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The correct Answer is:
B, C
Z = `sqrt (R^(2) + (1)/(omegaC)^(2))`
`I_R^(A)` = V/Z `Z^(')` lt Z
`I_R^(B)` = V/Z `I_R^(A)`lt`I_R^(B)`
`v_R^(A)` lt `V_R^(B)`
So `V_C^(A)` gt `V_C^(B)` `since` `V_B^(2)` + `V_C^(2)` = `V_o^(2)`
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