Prepare for the Aircraft Maintenance Technician 40 OandP Exam. Practice with flashcards and multiple choice questions. Each question is accompanied by hints and explanations to support your learning. Ace your exam with confidence!

Multiple Choice

If voltage doubles while resistance remains constant, what happens to current according to Ohm's Law?

Current changes directly with voltage when resistance is fixed, per Ohm’s Law: I = V / R. If you double the voltage while keeping the resistance the same, the current must also double. For example, with a 10-ohm resistor, 5 V gives 0.5 A, and 10 V gives 1 A. The other options don’t fit because increasing voltage while maintaining resistance cannot leave the current unchanged, and it certainly isn’t reduced to zero under these conditions unless voltage goes to zero or resistance becomes infinite.

Current changes directly with voltage when resistance is fixed, per Ohm’s Law: I = V / R. If you double the voltage while keeping the resistance the same, the current must also double. For example, with a 10-ohm resistor, 5 V gives 0.5 A, and 10 V gives 1 A. The other options don’t fit because increasing voltage while maintaining resistance cannot leave the current unchanged, and it certainly isn’t reduced to zero under these conditions unless voltage goes to zero or resistance becomes infinite.