A battery is charged at a potentail of `15 V` for 8 hours when the current flowing is `10 A` for 15 hours. Then mean terminal voltage during discharge is `14 V`. The Watt-hour efficiency of the battery is

A battery is charged at a potential of 15 V for 8 hours when the current flowing is 10 A. The battery on discharge supplies a current of 5 A for 15 hours. The mean terminal voltage during discharge is 14 V. The Watt-hour efficiency of the battery is

A battery is charged at a potential of 15 V for 8 h when the current flowing is 10A. The battery on discharge supplies a current of 5A for 15h . The mean terminal voltage during discharge is 14V. The watt-hour efficiency of the battery is

A battery is charged at a potential fo 15 V for 8 h when the current folwing is 10A. The battery on discharge supplies a current of 5A fo 15h . The mean terminal voltage during discharge is 14V. The watt-hour efficiency of the battery is

A battery is charged at a potential fo 15 V for 8 h when the current folwing is 10A. The battery on discharge supplies a current of 5A fo 15h . The mean terminal voltage during discharge is 14V. The watt-hour efficiency of the battery is

A battery is charged at a potential of 15 V for 8 hours when the current flowing is 10 A . The battery on discharge supplies a current of 5 A for 15 hours. The terminal voltage during discharge is 14 V . The 'Watt-hour" efficiency of the battery is.

A battery is charged at potential of 15 V for 8 h by means of a current of 10A. While discharging it supplies a current 5A for 15h at a potential difference of 14 V. Calculate the watt-hour efficiency of the battery.

A battery is charged at potential of 15 V for 8 h by means of a current of 10A. While discharging it supplies a current 5A for 15h at a potential difference of 14 V. Calculate the watt-hour efficiency of the battery.