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This page contains a variety of calculators as an aid in learning about and designing with resistors.It contains calculators for the total equivalent resistance of resistors in series and parallel, an Ohm’s Law calculator, and a voltage divider calculator.Resistors in Series CalculatorMain Page: Resistors in Series CalculatorThe resistors in series calculator (just below) takes the values of up to four (4) resistors and calculates the equivalent resistance.In a series circuit, current must flow through every circuit component; there is only one current path. Electrical resistance increases with every resistor that is added in series.To use the calculator, enter the individual resistance values for up to four resistors below.To find the total resistance in a series circuit (or a single branch of a parallel circuit), you just add up the resistances of everything in the circuit (or branch):R_{eq}=R_1+R_2+R_3+...+R_NResistors in Parallel CalculatorMain Page: Resistors in Parallel CalculatorThe resistors in parallel calculator takes the values of up to four (4) resistors and calculates the total equivalent resistance.Resistance, in particular, decreases with every additional resistor in a parallel circuit. In the parallel circuit on the right, each individual resistor (R1, R2 and R3) has a higher value of resistance than the three combined.To use the calculator, first select the number of resistors. Enter the resistor values sequentially, starting with R1.To find the equivalent resistance in a parallel circuit, you must find the reciprocal (‘ one over 1/ ‘) of the sum of the reciprocal of each individual value of resistance:R_{eq} = \frac{1}{\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+...+\frac{1}{R_N}}=(\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+...+\frac{1}{R_N})^{-1}Ohm’s Law CalculatorMain Article: Ohm’s Law CalculatorOhm’s Law describes the relationship between voltage, current, and resistance. When a voltage of value V is applied across a resistor with a resistance of R, the resistor will allow a current of I to flow through the circuit or branch:We can solve for resistance:EnterVoltage Divider CalculatorMain Article: Voltage Divider CalculatorVoltage dividers are passive circuits that use resistors to output a fraction of the input voltage.A voltage divider is naturally formed any time two resistors or resistive elements are placed in series together.In the circuit to the right, R1 and R2 can each represent a series of

Knowing the wires before working on a circuit is a must. We totally understand that. That’s why you’ve to make sure you’re working with the right wire. Is the common wire hot or neutral? Neutral wires are always known as common wires. They also have only one color casing, unlike hot wires. In the USA, white is used for neutral wires. So, if you’re in the US, you’ll notice white wires being present in every circuit. But in Europe and other parts of the globe, blue is the neutral aka common wire. Anyways, there’s a lot more to discuss and elaborate on. Please keep reading if you want to know more about common wires and color-coding. Are Common Wires Hot Or Neutral? If you’re new to the circuits, you’ll see 3 different wires most often. They are hot, neutral, and ground wires. Among all these wires, neutral wires are often known as common wires. One such reason is that Americans find white wires in every circuit. So, they call it the common wire to distinguish neutral wires from hot ones. In circuits, hot wires represent the source of electricity and the start of a circuit. It always carries electricity and should never be touched. While hot wires initiate the beginning, neutral wires complete the circuits. These wires carry electricity to the ground and complete a circuit. They are mostly found tied together. Also, if you’re seeing white and black wires tied together, that’s a different type of circuit. It’s called

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