Answer :
We can determine the current using the current formula, I = E/R, if the voltage (V) and resistance (E) of any circuit are known (amps).
What is effect of adding resistance?
Initially, this could sound illogical, but if you consider it in this manner, it makes sense: Any amount of resistance that you link between two nodes will permit some current to pass via this new branch, at the very least. When you "add" resistance, you really open up a new path for current, and a rise in total current is accompanied by a fall in total resistance.
What do you mean by current?
The amount of charge flowing across a circuit in one unit of time is known as the current. Charge doesn't ever start to build up and accumulate to the point where one site's current exceeds that of other sites. Resistors don't lose charge in a way that alters the current density from one place to the next. In a parallel circuit, charge divides into distinct branches, allowing one branch to carry more current than the other. The total current in each branch, however, equals the total current in all other locations when all the branches are added together.
The Ohms law served as the basis for the current formula. The movement of electrons via an electric circuit is known as current. Potential differences cause the flow of electrons. The rate of charge change over time is another name for current. I stands for current, and the SI unit of current is the ampere.
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The formula for finding the current (amperes) if the resistance and the voltage are known is I = E / R. This formula is derived from Ohm's law.
Which is the correct formula?
We need to remember Ohm's law, which states that the voltage (E) across a resistor (R) is proportional to the current (I) flowing through it. The constant of proportionality is the resistance (R).
To explain in detail, we can rearrange Ohm's law to get I = E / R by dividing both sides by R. This means that the current is equal to the voltage divided by the resistance. For example, if the voltage is 12 volts and the resistance is 4 ohms, the current is 12 / 4 = 3 amperes.
Thus, the formula for the current can be written as:
I = E/R
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