= 3. A slab of copper of thickness b = 2.00 mm is thrust into a parallel-plate capacitor of plate area A = 2.40 cm² and

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3 A Slab Of Copper Of Thickness B 2 00 Mm Is Thrust Into A Parallel Plate Capacitor Of Plate Area A 2 40 Cm And 1 (46.17 KiB) Viewed 38 times

= 3. A slab of copper of thickness b = 2.00 mm is thrust into a parallel-plate capacitor of plate area A = 2.40 cm² and plate separation d = 5.00 mm, as shown in Fig. 2; the slab is exactly halfway between the plates. (a) What is the capacitance after the slab is introduced? (b) If a potential difference V = 85.0 V is maintained between the plate, what is the ratio of the stored energy before to that after the slab is inserted? (c) How much work is done on the slab as it is inserted? (d) Is the slab sucked in or must it be pushed in? (25 points) B Figure 2