A $1.5\,\text{V}$ cell delivers $0.20\,\text{A}$ to a lamp for seven hours until the lamp no longer works. What is a sensible estimate of the cell’s initial chemical energy content?
- A$1 \times 10^2\,\text{J}$
- B$1 \times 10^4\,\text{J}$
- C$1 \times 10^6\,\text{J}$
- D$1 \times 10^8\,\text{J}$