The terminal voltage across a cell is more than its e.m.f., if another cell of
a) higher e.m.f. is connected parallel to it
b) less e.m.f. is connected parallel to it
c) less e.m.f. is connected in series with it
d) higher e.m.f. is connected in series with it
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Explanation:
ans is option---> (a)
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Higher EMF is connected parallel to it
Explanation:
The EMF of a cell is bigger than terminal voltage because the electric potential between the 2 terminals isn't connected to any of the circuit.
If it connects to the circuit then the voltage is automatically reduced due to the interior resistance.
The voltage output of the charger must be greater than the EMF of the battery to reverse current through it.
This may cause the terminal voltage of the battery to be greater than the EMF.
The terminal voltage will exceed the EMF of the battery when current is driven backward through the battery, in at its positive terminal and out at its negative terminal.
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