A Group Of $1.0 - \mu \mathrm { F } , 2.0 - \mu \mathrm { F }$

Multiple Choice

A group of $1.0 - \mu \mathrm { F } , 2.0 - \mu \mathrm { F }$ , and $3.0 - \mu \mathrm { F }$ capacitors is connected in parallel across a $24 - \mathrm { V }$ potential difference (a battery) . How much energy is stored in this three-capacitor combination when the capacitors are fully charged?

A) $2.1 \mathrm {~mJ}$
B) $1.7 \mathrm {~mJ}$
C) $4.8 \mathrm {~mJ}$
D) $7.1 \mathrm {~mJ}$