Slide the voltage adjustment on the battery upwards so that the potential differ

Question

Slide the voltage adjustment on the battery upwards so that the potential difference across the capacitor (read on the voltmeter) is between 0.3 V and 0.5V Capacitance can be calculated by C=: where ,-8.85×10-12N 2, A is the plate area (in square meters) and d is the plate separation distance (in meters). [Since area and distance are given by the simulation in mm2 and mm, respectively, you will have to convert these units] Plate Charge can be calculated by Q- AV - C (note that bold C is for capacitance and standard C is for Coulombs) N-m 2 Stored Energy can be calculated by E - Record your data, calculations and meter readings in a table as shown. Plate Separation Potential Capacitance AreadistanceDifference (calculated)Charge 2C Plate Stored Capacitance Energy(measured) ChargeEnergy Plate Stored (calculated) (calculated) (measured) (measured) Observed Calculated Meter Readings

Explanation / Answer

Voltmeter reading = emf of battery = 3 Volt

Capcitance , C = e0 A / d

C = (8.854 x 10^-12) (100 x 10^-6) / (10 x 10^-3)

C = 8.854 x 10^-14 F Or 0.885 x 10^-13 F ...Ans

Q = C V

Q = (8.85 x 10^-14)(3) = 2.655 x 10^-13 C

Or 2.665 x 10^-13 C .....Ans(Plate charge)

Stored energy = C V^2 /2 = (8.85 x 10^-14)(3^2) /2

= 3.984 x 10^-13 J .....Ans

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