AP' $\theta$ CollegeBoard AP Physics C: Electricity and Magnetism Test Booklet Classwork 4_2 A parallel plate capacitor has plate area $A$ and plate separation $d$. The capacitor is given a charge $Q$ and then isolated. The distance between the plates can then be varied, and several values can be measured. 8. How much work is required to change the separation between the charged plates from $\boldsymbol{d}$ to $3 \boldsymbol{d}$ ?

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