A50.0 nf air-filled parallel plate capacitor is connected in series with a 2.85 kn resistor and a battery of emf 36.0 v. (a) determine the final charge on the capacitor. (b) once the capacitor is fully charged and there is no current in the circuit, a sheet of plastic with a dielectric constant of 2.75 is introduced in the gap between the plates of the capacitor, completely filling the gap. if the area of each plate is 0.275 m² what is the electric field inside the plastic immediately after it is inserted (before there is any change in the charge on the plates of the capacitor)? n/c

Part a)

Part b)

Explanation:

Part a)

When capacitor is completely charged then its charge is given as

here we know that

C = 50 nF

V = 36.0 Volts

now we have

Part b)

now we know that

Now electric field inside the plastic sheet is given as

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