AIPMT PRELIMS 2004 Chemistry Batteries MCQ Question
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 :-
80%
90%
87.5%
82.5%
Correct Answer
Detailed Explanation
The efficiency is calculated using the ratio of output energy to input energy. Efficiency = (Output Energy/Input Energy) × 100%.
Found an issue with this question?
Related Questions
More from Electrochemistry
E° value of Ni²⁺/Ni is^{-0}.25 V and Ag⁺/Ag is +0.80 V. If a cell is made by taking the two electrodes what is the feasibility of the reaction?
The molar conductivity of 0.007 M acetic acid is 20 S cm² mol⁻¹. What is the dissociation constant of acetic acid? Choose the correct option. [Λ°_H⁺ =...
An electric charge of 5 Faradays is passed through three electrolytes AgNO₃, CuSO₄ and FeCl₃ solution. The grams of each metal liberated at cathode wi...
More from 2004
Assertion : A transistor amplifier in common emitter configuration has a low input impedence. Reason : The base to emitter region is forward biased.
Assertion : Tapeworm, roundworm and pinworm are endoparasites of human intestine. Reason : Improperly cooked food is the source of all intestinal in...
Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which lead to