What is the maximum current that can be drawn from the battery?
as the maximum current that can be drawn from a cell is for R =0 and it is I = E/r.
What is the EMF of the ideal battery?
In the shown figure, R1 = R2 = R3 = 50 Ω, R4 = 100 Ω, and the ideal battery has EMF = 6 V.
What is an ideal EMF device?
An ideal emf device is one that has no internal resistance to the internal movement of charge from terminal to terminal. The potential difference between the terminals of an ideal emf device is exactly equal to the emf of the device.
How do you calculate internal resistance?
Internal Resistance Calculator
- Formula. r = (e / i) – R.
- Electromotive Force (V)
- Current (amps)
- Load Resistance (ohms)
How does internal resistance of a cell vary with temperature?
On increasing temperature , in electrolytes, there is increase in thermally generated electrons over the existing ions, so the internal resistance will decrease with the increase of temperature and increase with the decrease of temperature.
Does internal resistance of cell depends on the current drawn from the same?
No. Internal resistance of a cell doesnt depend on the current drawn from it. Hello, Internal Resistance does not depends upon the current because it is simply the amount of opposition offered to the flow of electric current by the elecrolyte of the cell.
Which of the following factors will not affect appreciably the emf of the cell?
Emf generated does not depends on the size of plates.
What are the factors on which EMF of cell depends?
E.m.f. of a cell depends upon the material of electrodes and electrolyte used in the cell. It is independent of shape of electrodes, distance between electrodes and the amount of electrolyte.
How does temperature affect voltaic cells?
The rate of the forward reaction is therefore reduced with an increase in temperature, and as ionisation is suppressed, the cell potential and so the voltage generated by the reaction decreases (I saw this somewhere, idk). Therefore, the voltage generated by the voltaic cell would decrease with temperature.
What does the Nernst equation tell us?
The Nernst Equation enables the determination of cell potential under non-standard conditions. It relates the measured cell potential to the reaction quotient and allows the accurate determination of equilibrium constants (including solubility constants).