What occurs at the end of a negative cell if an electric cell is placed in a closed circuit?

1. Current means flow of electrons and electrons are negative charged and so are attracted to the positive end of the battery and repelled by the negative end.

2. When battery is connected in a circuit that lets the electron flow through it, they flow from negative to positive.

3. When negative terminal of cell is connected to other negative terminal of the cell in a particular circuit then, current will not flow in circuit as electrons cannot flow from negative to negative terminal.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.