Question
Physics Question on Moving charges and magnetism
A battery is charged at a potential of 15V for 8 hours when the current flowing is 10A. The battery on discharge supplies a current of 5A for 15 hours. The mean terminal voltage during discharges is 14 V. The "Watt-hour" efficiency of the battery is
A
80%
B
90%
C
87.50%
D
82.50%
Answer
87.50%
Explanation
Solution
The Watt-hour efficiency of the battery is 93.33%.