Battery Terminal Voltage and Nernst Equation

This video tutorial explains the concept of terminal voltage in batteries, detailing the basic equation and factors affecting it, such as overload and internal resistance. It also covers the Nernst equation and how electrolytic concentration impacts terminal voltage. The session concludes with a summary of the key points discussed.

What is the basic equation for terminal voltage in a battery?

• V = E - I * R

• V = I / R

• V = I * R

• V = E + I * R

How does connecting too many devices to a battery affect its terminal voltage?

• It increases the terminal voltage.

• It stabilizes the terminal voltage.

• It has no effect on the terminal voltage.

• It decreases the terminal voltage.

Which factor is directly related to the decrease in terminal voltage when a battery is overloaded?

• Decrease in electrolyte concentration

• Increase in current

• Decrease in current

• Increase in internal resistance

What role does internal resistance play in a battery's terminal voltage?

• It has no effect on the terminal voltage.

• It decreases the terminal voltage.

• It only affects the current.

• It increases the terminal voltage.

Which equation relates cell potential to the concentration of electrolytes?

• Boyle's Law

• Faraday's Law

• Nernst Equation

• Ohm's Law

What happens to the cell potential as the concentration of electrolytes increases?

• It increases.

• It decreases.

• It fluctuates randomly.

• It remains constant.

What is the standard cell potential denoted by in the Nernst equation?

• E

• E not cell

• Q

• R

What is the effect of temperature on the Nernst equation?

• Temperature affects only the internal resistance.

• Higher temperature decreases cell potential.

• Higher temperature increases cell potential.

• Temperature has no effect.

What is the role of Faraday's constant in the Nernst equation?

• It is used to calculate the ideal gas constant.

• It represents the number of moles of electrons.

• It is used to calculate the cell potential.

• It represents the absolute temperature.

Which of the following is NOT a factor affecting terminal voltage?

• Current drawn from the battery

• Internal resistance

• Electrolyte concentration

• Battery color