Answer to Question #10320 in Electric Circuits for saksham
electrodes. Therefore some useful energy of emf-source is used in
current through the source.
Let the internal resistance of the source is
Potential drop across emf source = Vr
Since V = E - Vr, so V = E -
Where V = terminal potential difference
When no current is drawn from
the source then emf and terminal
potential difference are equal. If the
current is passing through the
circuit then the terminal potential difference
is less than that of
the emf of the source.
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