GATE 2021 CY – Question 34

Physical Chemistry · Electrochemistry: Standard electrode potential and electrochemical cells. Nernst Equation and its application, relationship between electrode potential and thermodynamic quantities, Potentiometric and conductometric titrations. Ionic mobility and conductivity. Kohlrausch’s law, Debye-Hückel limiting law. Debye-Hückel- Onsager equation. · 1 mark · Numerical answer

A 5 V battery delivers a steady current of 1.5 A for a period of 2 h. The total charge that has passed through the circuit is ______ Coulombs.

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Correct answer: 10800 to 10800

Explanation

Charge is Q=It. Convert 2 h to 2×3600=7200 s, then Q=1.5×7200=**10800 C**. The stated 5 V would be needed for electrical energy VIt, but does not enter the charge calculation.