MDCAT Alternating Current MCQs
Customize your practice drill: select target topics, configure your question limit (up to 180 MCQs per test), and choose your mode.
Total Topics
3
Selected Topics
1
Available MCQs
179
Question Limit
Up to 180
Select Topics to Practice
Questions will be drawn only from checked topics.
Test Configuration
Configure question count (limit 180) and testing mode.
Selected topics have 179 total questions. Test will draw 50 shuffled MCQs.
Sample Alternating Current MCQs with answers
Try these questions, then open the answer to check your reasoning. Use the quiz above for more topics and a complete review.
AC Phase
1. An AC source has frequency . Its period is:
- A.
- B.
- C.
- D.
View answer and explanation
Answer: D.
AC Circuits
2. RLC application 76: in a pure capacitor, current is ahead of voltage by:
- A.
- B.
- C.
- D.
View answer and explanation
Answer: B.
Capacitor current leads voltage by one-quarter cycle.
AC Circuits
3. Which statement is correct for a pure inductive circuit?
- A. Current and voltage are in phase
- B. Current leads voltage
- C. Voltage leads current
- D. No current flows
View answer and explanation
Answer: C. Voltage leads current
In a pure inductive circuit the inductor opposes changes in current, so the current lags behind the applied voltage by — equivalently, voltage leads current (option C). Current and voltage are in phase only for a pure resistor, current leads voltage in a capacitor, and current certainly flows in an inductor. Hence option C is correct.
About this unit
MDCAT Alternating Current — Unit 48
425 practice MCQs covering AC Phase, AC Circuits, EM Spectrum. Select custom topics and sit tailored tests up to 180 questions per drill.
Common questions about Alternating Current practice
How many Alternating Current MCQs are available on DIFF. MDCAT?
The current Alternating Current question bank contains 425 practice MCQs across 3 topics. This is the bank size, not the length of one test. Choose your topics and a question count from 1 to 180, limited by the questions available in those topics.
Which topics does the Alternating Current quiz cover?
The selectable topics are AC Phase, AC Circuits, EM Spectrum. Use Select all for a broad chapter drill, Clear to start a focused selection, or choose individual topics. Questions are drawn from your chosen topics, so you can target a weak concept before returning to a wider test.
How do I build a custom Alternating Current test?
Open the chapter builder, select one or more topics, enter your question count, and choose Tutor Mode or Timed Exam. The available-question total updates with your selection. Start Test generates a shuffled drill; you do not have to follow a fixed Quiz 1 or Quiz 2 sequence.
What is the difference between Tutor Mode and Timed Exam?
Tutor Mode gives feedback and an explanation after you choose an option, and you can change or clear that choice. Timed Exam runs a countdown and keeps explanations hidden until submission. Both modes let you move between questions, use the paper map, and submit for a complete review.
How do I review and download my Alternating Current quiz?
Select Submit Quiz, then Submit & View Explanations. The review includes every question in your test, all options, your selection, the marked correct answer when a key is available, and the explanation. Download PDF saves a paginated review; Download Review saves an HTML copy you can open in a browser. The review also includes DIFF. MDCAT community links.
How should I use Alternating Current MCQs to improve?
Start with a short tutor drill on one of these topics: AC Phase, AC Circuits, EM Spectrum. Read the explanation for incorrect and uncertain answers, revise the relevant textbook section, and retry before taking a timed drill. Compare your reasoning with the answer key rather than memorising the option letter.