A current-carrying wire got pulled, stretching it and making it thinner in its middle. The cross-section of that wire is shown in the following figure. Which of the following statements about the current and the temperature of the wire is true?

Options

A. The current and temperature at the thin section of the wire is higher than at the thick section
B. The current and temperature at the thick section of the wire is higher than at the thin section
C. The current and temperature at the wire is the same everywhere
D. The current in the wire is the same everywhere, but the temperature of the wire is higher in the thin section

Answer

D