Batteries (e.g., lead-acid batteries) store chemical energy and convert it to electric energy on demand. Batteries do not store electric charge or charge carriers. Charge carriers (electrons) enter one terminal of the battery, acquire electrical potential energy, and exit from the other terminal at a lower voltage. Remember the electron has a negative charge! It is convenient to think of positive carriers flowing in the opposite direction, that is, conventional current, and exiting at a higher voltage. (Benjamin Franklin caused this mess!) For a battery rated at 12 V and 350 A-h, determine: a. The rated chemical energy stored in the battery. b. The total charge that can be supplied at the rated voltage.
What will be an ideal response?
Known quantities:
Rated voltage of the battery; rated capacity of the battery.
Find:
a) The rated chemical energy stored in the battery
b) The total charge that can be supplied at the rated voltage.
Analysis:
a)
As the battery discharges, the voltage will decrease below the rated voltage. The remaining chemical energy stored in the battery is less useful or not useful.
b) is the total charge passing through the battery and gaining 12 J/C of electrical energy.
You might also like to view...
An engine is disassembled because of a single torched piston: the other five appear normal. Which of the following should be investigated first?
A. failed head gasket fire ring B. oil cooling jet C. water jacket scaling D. connecting rod oil rifle
Schematics are generally read ____.
a. from right to left b. from left to right c. from bottom to top d. in any direction desired
A DSP is a special type of microprocessor that processes data in real time
Indicate whether the statement is true or false
The automatic expansion valve maintains a constant ____________________.
Fill in the blank(s) with the appropriate word(s).