# How shocking

A 9V battery has an electric potential difference of $$9~\mbox{V}$$ between the positive and negative terminals. How much kinetic energy in J would an electron gain if it moved from the negative terminal to the positive one?

Details and assumptions

• The charge on the electron is $$-1.6 \times 10^{-19}~\mbox{C}$$.
• You may assume energy is conserved (so no drag or energy loss due to resistance for the electron).
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