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Emf of a cell when the cell is charging and discharging and Open circuit and Short circuit is considered one of the most asked concept.
9 Questions around this concept.
A student measures the terminal potential difference (V) of a cell (of emf E and internal resistance r) as a function of the current (I) flowing through it. The slope and intercept, of the graph between V and I, then, respectively, equal:
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When a capacitor is connected to a battery through a resistance , the plates of the capacitor will acquire equal and opposite charge and potential difference across it become equal to the emf of battery. The process called charging takes sometime and during this time there is an electric current through the resistance. If at any time t, q is the charge on capacitor, then from Kirchoff's law.
In the circuit shown, the battery is ideal with emf . The capacitor is initially uncharged. The switch is closed at
Question:-
The charge on the capacitor at time is
Emf of a cell when the cell is charging and discharging and Open circuit and Short circuit
Open circuit t:
no current is taken from the cell.
The potential difference between A and B
The potential difference between C and D
Short circuit
Two terminals of a cell are joined together by a thick conducting wire
Maximum current
Equation of cell
When supplying the current:
When the cell is being charged:
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