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The answer comes from Energy Conservation Principle which commonly is known as Kirchoff's Voltage Law.
Voltage is basically work done per unit charge and work is form of energy which has to be conserved. Also, electric fields are conservative that means work done depends only on initial and final points.
Combining all that I have said, if you make your starting and end point same, that is run in a loop, effectively work done will be zero (Potential difference is zero). Thus in a parallel circuit if the voltages are not equal, changing the loops will violate this principle.
Let's say you have 2 resistors in parallel attached to a battery. If you assume that the voltages of branches are different, then considering the loop that contains both the resistors and applying KVL violates energy conservation and that's not possible. Thus the only possibility is the voltage has to be same.
Additional Note: The same voltage might not be equal to battery voltage if there is any resistor in path of parallel wires and battery. But the parallel voltages will be equal.
What else can I help you with?
What happens to a parallel circuit resistance if the voltage applied is doubled?
In a parallel circuit, the total resistance remains the same when the voltage applied is doubled. Each branch in the parallel circuit will experience the same increase in voltage, but their individual resistances will remain constant.
How are parallel circuit lights better than series circuit lights using science facts?
In a parallel circuit, there are multiple paths for electricity to flow. So, if one switch is turned off there is still other paths for electricity to flow so the other lights can remain on. However, in a series circuit there is only one path for the electricity to travel. So, if the switch in a series circuit was turned off the electricity would stop flowing causing all the lights to go out.
In a series circuit what happens to the current if you increase the number of components in the circuit?
The current (amps) will remain constant, but the voltage will drop.
How does a switch affect a parallel circuit?
In a parallel circuit, each branch operates independently from the others. Adding a switch to one branch of a parallel circuit will only affect that specific branch, allowing you to control the flow of current in that path while the other branches remain unaffected.
What happens to the power in a circuit as the current increases?
P=VI If current (I) increases then P will increase proportionally. That is, assuming that voltage (V) remains constant. If voltage decreases and current increases or vice versa, proportionally then P will remain the same.
What happens to a parallel circuit resistance if the voltage applied is doubled?
In a parallel circuit, the total resistance remains the same when the voltage applied is doubled. Each branch in the parallel circuit will experience the same increase in voltage, but their individual resistances will remain constant.
What happens if a light blows in a parallel circuit?
The rest of the lights in the system will remain illuminated. Except in that branch of the circuit. The parallel branch(s) get more current if the voltage potential remains the same.
How can in series connection current remain constant while the voltage change while by ohm's law voltage is directly proportional to current?
If the voltage between the ends of a series circuit changes, the current in thecircuit definitely does not remain constant. The current does change by the samefactor as the voltage.The current at every point in the series circuit is the same current.
What term remains the same across all the resistances in a parallel combination of resistances?
The voltage across the resistors will remain constant.
What happens when you halve the resistance in a circuit when voltage remain constant?
Since resistance is the ratio of voltage to current, we can say that halving the resistance will result in twice the current.
What happens to voltage and current in series circuits?
Kirchoff's voltage law states that the signed sums of the voltage drops in a series circuit add up to zero.Kirchoff's current law states that the current everywhere in a series circuit is the same, more specifically, that the signed sums of the currents entering a node is zero.
What happens to the voltage if the current increases?
Yes, if the resistance remains constant. Power is voltage times current, and current is voltage divided by resistance, so power is voltage squared divided by resistance. In essence, the power increases as the square of the voltage.
Why do you think one light bulb stayed on when the other light bulb was unhooked in a parallel circuit?
In a parallel circuit each bulb has the same voltage applied so if one bulbfails all the others will remain lit.
What happens to the voltage in a series circuit when more loads are added?
A: assuming a infinite current source the current will increase accordingly
When current remains constant and resistance increases the voltage in the circuit will?
The physical equation governing voltage is V = IR, where V is voltage, I is current, and R is resistance. If V remains constant while R is increased, I or current must decrease. Increasing the resistance in a circuit is simply introducing a material that further resists or impedes the electron flow (current), thus current decreases.
When resistors are connected in parallel what are the relationships between the voltage drops across the resistor and currents through the resistors?
A: The relationship is that the current will divide for each paths in a parallel circuit and the voltage drop across each will be the source voltage. In a series circuit the current will remain the same for each component but the voltage will divide to reflect each different component value. And the sum of all of the voltage drops will add to the voltage source.
What are Relationship between the voltage drop across the resistors and the currents through the resistors when resistors are connected in parallel?
A: The relationship is that the current will divide for each paths in a parallel circuit and the voltage drop across each will be the source voltage. In a series circuit the current will remain the same for each component but the voltage will divide to reflect each different component value. And the sum of all of the voltage drops will add to the voltage source.
