The flow of electric current can most aptly be described as:
A) the flow of positive charges from a region of high potential to a region of low potential.
B) the flow of positive charges from a region of low potential to a region of high potential.
C) the flow of negative charges (electrons) from a region of high potential to a region of low potential.
D) the flux of electric field lines due to inductive effects created by electromagnetic potential.
Explanation
Here, choice (A) is a good definition of electric current. Even though it’s electrons moving through the wires, current is seen as the flow of positive charges. Remember that in a circuit, current is the opposite of the flow of electrons.
B: Current flows from high potential to low potential.
C: Current is the flow of positive charges, not negative.
D: Electric flux is the flow of an electric field, not the flow of current. Note that the MCAT will not expect you to know content related to electric or magnetic flux. As a rule of thumb, if a choice discusses something you haven’t heard of before, then it’s the wrong answer.
Want more MCAT practice?
We’ve got options for every schedule and learning style!
From the best online MCAT course created by top instructors with 524+ MCAT scores to the most representative full-length practice exams and private tutoring, we can custom tailor your MCAT prep to your goals!
Not sure which option is right for you? Schedule a free MCAT consultation with an MCAT expert using the form below. No obligation, just expert advice.
Related Posts
Search the Blog
Free Consultation
Interested in our Online MCAT Course, One-on-One MCAT Tutoring or Med admissions packages? Set up a free consultation with one of our experienced Senior Student Advisors.
Schedule NowPopular Posts
-
-
MCAT Blog What's on the MCAT? -
-
-
MCAT Blog How to Review MCAT Full Lengths
Free MCAT Practice Account
Need great MCAT practice?Get the most representative MCAT practice possible when you sign up for our free MCAT Account, which includes a half-length diagnostic exam and one of our full-length MCAT practice exams.
Learn More