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A capacitor with capacitance 5 F is charged to 5 C.  If the plates are pulled apart to reduce the capacitance to 2 F, how much work is done?

(a)

2.55 × 10–6 J

(b)

6.25 × 10−6 J

(c)

3.75 × 10–6 J

(d)

2.16 × 10–6 J


Question ID - 51228 :-

A capacitor with capacitance 5 F is charged to 5 C.  If the plates are pulled apart to reduce the capacitance to 2 F, how much work is done?

(a)

2.55 × 10–6 J

(b)

6.25 × 10−6 J

(c)

3.75 × 10–6 J

(d)

2.16 × 10–6 J

1 Answer
5876 Votes
3537

Answer Key : (c) -

Ui =

Uf =

W=

=

W=3.75 J



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