A capacitor with a capacitance 5 F is charged to 5 C. If the plates are pulled apart to reduce the capacitance to 2 F,

A capacitor with a capacitance 5 µF is charged to 5 µC. If the plates are pulled apart to reduce the capacitance to 2 µF, how much work is done

(a) 6.25 × 10–6 J

(b) 3.75 × 10–6 J

(c) 2.16 × 10–6 J

(d) 2.55 × 10–6 J