Question

when charging a battery, work is done on the battery to store energy. simultaneously, the heat generated during charging is transferred out of the battery. which description relates the signs for heat and work for the battery? q = +, w = 0 q = -, w = + q = -, w = -

Explanation:

To determine the signs of heat (\(q\)) and work (\(w\)) for the battery:

• Work (\(w\)): When charging, work is done on the battery. In thermodynamics, work done on the system (battery) is positive (\(w = +\)).
• Heat (\(q\)): Heat is transferred out of the battery. Heat leaving the system is negative (\(q = -\)).

Thus, \(q = -\) and \(w = +\), matching the second option.

Answer:

B. \(q = -, w = +\) (where the option is the second choice with \(q = -, w = +\))