Industrial Maintenance Technician Practice Test 2025 - Free Maintenance Technician Practice Questions and Study Guide

Question: 1 / 400

When resistors are connected in parallel, how does the total resistance compare to the individual resistors?

The total resistance is greater

The total resistance is equal

The total resistance is less

When resistors are connected in parallel, the total resistance is indeed less than the resistance of the individual resistors. This is because the parallel configuration allows multiple paths for the current to flow. Each resistor provides a separate pathway, which reduces the overall resistance in the circuit.

The mathematical relationship for calculating total resistance in a parallel arrangement is given by the formula:

1/R_total = 1/R1 + 1/R2 + 1/R3 + ...

This means that as you add more resistors in parallel, the total resistance continues to decrease, approaching zero as the number of resistors increases, assuming they all have some reliable resistance. This behavior is the opposite of resistors in series, where the total resistance increases with the addition of more resistors. Understanding this concept is crucial for effectively designing and analyzing electrical circuits in industrial maintenance contexts.

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The total resistance is cumulative

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