Internet of Things (IoT) Practice Exam

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Prepare for your Internet of Things (IoT) Exam with engaging quizzes. Study IoT concepts through flashcards and multiple-choice questions, complete with hints and explanations. Master the IoT domain for your test success!

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.

If you need to increase the current through a resistor in a circuit, what would you do?

Decrease the voltage applied to the resistor
Increase the voltage applied to the resistor
Increase the room temperature
Decrease the resistance

The correct answer is: Increase the voltage applied to the resistor

To increase the current flowing through a resistor in a circuit, increasing the voltage applied to the resistor is the appropriate action. This relationship is described by Ohm's Law, which states that the current (I) through a resistor is directly proportional to the voltage (V) across it and inversely proportional to the resistance (R), represented by the formula I = V/R. When you increase the voltage while keeping the resistance constant, the increased voltage leads to a higher current flowing through the resistor. This principle is fundamental in electrical engineering and circuit design, as it allows for the manipulation of current levels simply by adjusting the voltage. The other options do not effectively increase the current under standard conditions. Decreasing the voltage would lower the current, and altering the room temperature can affect resistance but does not directly increase the voltage or current. Decreasing the resistance could also increase the current, but this requires a change in the physical component, rather than simply adjusting the voltage applied to the existing resistor.