Series and parallel circuits 7-10-00 section 191 series circuits a series circuit is a circuit in which resistors are arranged in a chain, so the current has only one path to take. Just as in the case of series circuits, the same caveat for ohm’s law applies: values for voltage, current, and resistance must be in the same context in order for the calculations to work correctly however, in the above example circuit, we can immediately apply ohm’s law to each resistor to.
Series circuits parallel circuits ohmmeter parallel circuits a parallel circuit is one that has two or more paths for the electricity to flow, the loads are parallel to each other if the loads in this circuit were light bulbs and one blew out, there is still current flowing to the others because they are still in a direct path from. We know the voltage of the source (9 volts) applied across the series combination of r 1, r 2, and r 3, and we know the resistance of each resistor, but since those quantities aren’t in the same context, we can’t use ohm’s law to determine the circuit current.
When describing voltage, current, and resistance, a common analogy is a water tank in this analogy, charge is represented by the water amount , voltage is represented by the water pressure , and current is represented by the water flow. Voltage is the cause, current is the effect voltage attempts to make a current flow, and current will flow if the circuit is complete voltage is sometimes described as the 'push' or 'force' of the electricity, it isn't really a force but this may help you to imagine what is happening.
Since the current is everywhere the same within a series circuit, the i value of δv = i • r is the same in each of the resistors of a series circuit so the voltage drop (δv) will vary with varying resistance. Resistors in series carry the same current, but the voltage drop across them is not the same as their individual resistance values will create different voltage drops across each resistor as determined by ohm’s law ( v = ir ) then series circuits are voltage dividers.
This principle completes our triad of “rules” for parallel circuits, just as series circuits were found to have three rules for voltage, current, and resistance mathematically, the relationship between total resistance and individual resistances in a parallel circuit looks like this. Parallel circuits a parallel circuit is one that has two or more paths for the electricity to flow, the loads are parallel to each other if the loads in this circuit were light bulbs and one blew out, there is still current flowing to the others because they are still in a direct path from the negative to positive terminals of the battery.
Relationship between voltage and current current and voltage are two fundamental quantities in electricityvoltage is the cause and current is the effect the voltage between two points is equal to the electrical potential difference between those points. For two conductances and in series the current through them will be the same and kirchhoff's voltage law tells us that the voltage across them is the sum of the voltages across each conductance, that is.
For example if a 2v battery and a 6v battery are connected to a resistor and led in series, the current through all the components would be same (say, 15ma) but the voltages will be different (5v across the resistor and the 3v across the led) comments: current vs voltage anonymous comments (5) june 23, 2013, 4:40am.