Electric Potential Energy Practice Test

A $-3.0,\mu\text{C}$ charge is moved from point $C$ at $V_C=+5,\text{V}$ to point $D$ at $V_D=+25,\text{V}$. The charge is negative, and the final potential is higher than the initial potential. As the charge moves from $C$ to $D$, the electric potential energy of the charge _____?

A $+2.0,\mu\text{C}$ charge moves from point $A$ at $V_A=+30,\text{V}$ to point $B$ at $V_B=+10,\text{V}$ in a region where electric potential is defined. The charge’s sign is positive, and the final potential is lower than the initial potential. As the charge moves from $A$ to $B$, how does the electric potential energy of the charge change?