Physics – Electrochemical Cell

1. Which of the following are electrochemical cells?

  1. Solar cell
  2. Galvanic cell
  3. Fuel cell
  4. Wind cell
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Answer: Option B. Galvanic cell

2. What is the total EMF of n cells connected in series?

  1. Average EMF of individual cells
  2. Product of EMF of all cells
  3. Maximum EMF of one cell
  4. Sum of the EMF values of each cell
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Answer: Option D. Sum of the EMF values of each cell

3. What is a cell that induces a spontaneous redox reaction to generate a flow of electric charge called?

  1. Galvanic cell
  2. Capacitor cell
  3. Solar cell
  4. Nuclear energy cell
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Answer: Option A. Galvanic cell

4. What is the term for the resistance caused by the electrolyte and electrodes during current flow?

  1. Internal resistance
  2. Thermal resistance
  3. Magnetic resistance
  4. Acoustic resistance
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Answer: Option A. Internal resistance

5. What is the total internal resistance of a series combination of n cells?

  1. Average internal resistance of individual cells
  2. Product of internal resistances of all cells
  3. Sum of the internal resistances of all n cells
  4. Maximum internal resistance of one cell
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Answer: Option C. Sum of the internal resistances of all n cells