If a component has a resistance of 7 Ω and carries a current of 2 A, what is the voltage across it?

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Study for the AAMI Certified Associate in Biomedical Technology Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

If a component has a resistance of 7 Ω and carries a current of 2 A, what is the voltage across it?

Explanation:
Voltage across a component is found using Ohm's law: V = I × R. With a current of 2 A flowing through a resistance of 7 Ω, the voltage is 2 × 7 = 14 V. This means the potential difference required to push 2 amperes through 7 ohms is 14 volts. The other numbers would only be correct if either the current or the resistance were different, since V changes in proportion to both.

Voltage across a component is found using Ohm's law: V = I × R. With a current of 2 A flowing through a resistance of 7 Ω, the voltage is 2 × 7 = 14 V. This means the potential difference required to push 2 amperes through 7 ohms is 14 volts. The other numbers would only be correct if either the current or the resistance were different, since V changes in proportion to both.

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