AVIXA Recognized AV Technologist Test

If voltage remains constant and current increases, what happens to resistance?

1. Increased

2. Stayed the same

3. Reversed polarity

4. Decreased

The correct answer is: Increased

When voltage remains constant and current increases, the relationship defined by Ohm's Law becomes crucial to understanding the dynamics of resistance. Ohm’s Law states that voltage (V) is equal to current (I) multiplied by resistance (R), expressed mathematically as V = I × R. If the voltage is fixed and the current increases, it follows that resistance must adjust accordingly to maintain the equality expressed in Ohm's Law. Specifically, since resistance is the quotient of voltage divided by current (R = V/I), an increase in current at a constant voltage results in a decrease in resistance. Therefore, the correct answer should reflect that if you are holding voltage constant while current rises, the resistance must decrease to satisfy the equation. This behavior illustrates a fundamental concept in electrical circuits where resistance is inversely proportional to current when voltage is constant. Thus, resistance does not increase; it actually decreases in response to increased current under fixed voltage conditions.