ARRL Technician Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the ARRL Technician Exam with this interactive quiz. Study with flashcards, multiple choice questions, each providing detailed explanations and hints. Ace your exam with confidence!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the resistance in a circuit with an applied voltage of 12 volts and current flow of 1.5 amperes?

6 ohms
8 ohms
10 ohms
12 ohms

The correct answer is: 8 ohms

To determine the resistance in a circuit, Ohm’s Law is applied, which states that resistance (R) equals voltage (V) divided by current (I). The formula is expressed as: \[ R = \frac{V}{I} \] In this case, the voltage (V) is 12 volts and the current (I) is 1.5 amperes. Performing the calculation: \[ R = \frac{12 \, \text{volts}}{1.5 \, \text{amperes}} = 8 \, \text{ohms} \] Thus, the resistance in the circuit is 8 ohms. Understanding this relationship between voltage, current, and resistance is fundamental in electrical engineering and is essential for analyzing circuits effectively. The correct choice reflects this calculation, accurately demonstrating the application of Ohm's Law.