What happens to current flow if resistance increases while pressure remains the same?

Study for the 1-3 Apprentice Lineman Test. Prepare with multiple choice and flashcards. Get ready for your exam with detailed questions and answers.

When resistance increases while pressure, or voltage, remains constant, the current flow decreases. This principle is rooted in Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R), expressed as I = V/R.

If you consider that the voltage is fixed and the resistance rises, the current has to decrease because the current is inversely proportional to resistance. Essentially, an increase in resistance means that it is more difficult for current to flow through the circuit.

For example, if you imagine water flowing through a pipe, increasing the size of the pipe (decreasing resistance) would allow more water (current) to flow, while making the pipe narrower (increasing resistance) restricts the flow of water. Therefore, with constant voltage, increasing resistance results in a reduction of current flow, affirming that the current indeed decreases in that scenario.

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