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Total resistance is the overall opposition to the flow of electric current in a circuit. It is measured in ohms and is influenced by the number and type of components in the circuit.
To solve for 3ohm in a circuit, you need to use Ohm's Law, which states that resistance (R) is equal to voltage (V) divided by current (I). In this case, you would plug in 3ohm for R and the given values for V and I to solve for the missing variable.
Knowing the total resistance in a circuit is important because it allows us to calculate the amount of current that will flow through the circuit, as well as the amount of voltage that will be dropped across each component. This information is crucial for designing and troubleshooting circuits.
When you add more resistors in a circuit, the total resistance increases. This is because resistors in a series add up to create a larger overall resistance, while resistors in parallel have a combined resistance that is lower than any individual resistor.
The most common unit for measuring resistance is ohms (Ω). However, smaller units such as milliohms (mΩ) and kilohms (kΩ) are also used. In some cases, larger units like megohms (MΩ) are used for high resistance values.
