In a parallel circuit, if one resistor fails, what happens to the total resistan

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Question: In a parallel circuit, if one resistor fails, what happens to the total resistance? (2020)

Options:

Correct Answer: Decreases

Exam Year: 2020

Solution:

In a parallel circuit, if one resistor fails, the total resistance decreases because there are fewer paths for current to flow.

In a parallel circuit, if one resistor fails, what happens to the total resistance? (2020)

In a parallel circuit, if one resistor fails, what happens to the total resistance? (2020)

Step 1: Understand what a parallel circuit is. In a parallel circuit, there are multiple paths for electricity to flow.
Step 2: Know that each resistor in a parallel circuit provides a path for current. If one resistor fails, it means that one path is no longer available.
Step 3: Realize that when one path is removed, the total number of paths for current decreases.
Step 4: Remember that in a parallel circuit, having more paths (resistors) actually lowers the total resistance. So, if one path is removed, the total resistance increases.
Step 5: Conclude that if one resistor fails, the total resistance of the circuit increases because there are fewer paths for current to flow.

Parallel Circuit Behavior – In a parallel circuit, the total resistance is affected by the number of resistors; if one fails, the total resistance decreases as there are fewer paths for current.