Question

question 21

in a series circuit, each resistor _________ the flow of current in the circuit.
a. impedes
b. increases
c. neutralizes
d. stabilizes

Explanation:

Analyze the role of a resistor

Using the Electrical Resistance knowledge point

$$ R = \frac{V}{I} $$

Resistance is the opposition to the flow of electric current.

Evaluate the effect in a series circuit

Using the Series Circuits knowledge point

$$ R_{\text{total}} = R_1 + R_2 + \dots + R_n $$

Adding resistors in series increases total resistance, which opposes and reduces (impedes) the overall current flow.

Match with the given options

• impedes: To delay or obstruct the progress of; block. This matches the definition of resistance.
• increases: Resistors oppose current, so they do not increase it.
• neutralizes: Resistors do not cancel out or neutralize current.
• stabilizes: While resistors can limit current, their fundamental physical action is opposition (impedance).

Answer:

• a. impedes (Correct answer)
• b. increases
• c. neutralizes
• d. stabilizes