The ground is the reference point for measuring test point voltages in a circuit. It is the part of the circuit that is the lowest level in electronic energy or voltage upon which the voltage or electrical potential of other points in the circuit are measured. Ground is the lowest electrical potential point in a circuit, it can be seen as the negative terminal of a battery or power supply. Current flows in circuit to return to ground to understand this better watch the video tutorial above. This is because the energy (voltage) of the current at point A is bigger than the energy (Voltage) at point B. Just as we know that water does not flow uphill. The current coming out of the power source in the circuit will never flow from point B to point A but the other way round as indicated by the arrows. Look at the circuit below current flow direction in a circuit Current will flow from a region of higher electrical potential or voltage to a region of lower electrical potential or voltage: Electronics is simply the use of electronic components to manipulate the flow of current to achieve a desired aim in a circuit. And that is what electronics is all about. With this illustration, you will understand that electrical resistance can be used to determine how current flows in a circuit.
When you look at the simulation closely, you will see that more current is flowing through the path that has the 10k resistor than the path that has 100k resistor.
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