Multiple Choice
A parallel-plate capacitor has a capacitance of 10 mF and charged with a 20 V power supply. The power supply is then removed and a dielectric of dielectric constant 4 is used to fill the space between the plates. The energy now stored by the capacitor is
A) 250 mJ.
B) 125 mJ.
C) 500 mJ.
D) zero.
E) 62.5 mJ.
Correct Answer:
Verified
Correct Answer:
Verified
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