About. Transcript. EMF is the work done by the cell in moving a coulomb of charge across its terminals. It represents the energy transferred per coulomb to the charges. Some of this energy is lost as heat due to internal energy. Hence the net energy gained by the charge = the emf - heat lost.
Electrical sources and internal resistance. Finding the EMF and internal resistance of a cell. A voltmeter and variable resistor. Watch this video to see how the EMF and internal resistance
The EMF (electromotive force) of a cell is the maximum potential difference between two electrodes of a cell. EMF is measure by combining two separate half cells. The \text {E}^ {\varnothing} of individual half cells can also be used to predict overall chemical reactions. Cell Potentials.
The emf is a measure of how much energy the cell transfers per unit of charge passing through it. Cells transfer energy to the charges, allowing them to flow around the circuit. So, the emf of a cell can produce a current in a circuit. We can connect multiple cells together. One way to do this is to connect them in series.
EMF or electromotive force is equal to the potential difference across the terminals of the cell when no current is present. EMF is the energy provided by a cell or battery per coulomb of charge passing through it and it is measured in volts(V).
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what is emf of a cell
