MDCAT Current Electricity MCQs
Customize your practice drill: select target topics, configure your question limit (up to 180 MCQs per test), and choose your mode.
Total Topics
9
Selected Topics
1
Available MCQs
28
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 28 total questions. Test will draw 28 shuffled MCQs.
Sample Current Electricity 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.
Steady current
1. A steady current of means that:
- A. of charge passes a point each second
- B. appears across each ohm
- C. of energy flows each second
- D. electrons travel at the speed of light in the wire
View answer and explanation
Answer: A. of charge passes a point each second
Outcome 9.1: One ampere is one coulomb per second through a cross-section. Energy per second is power; voltage per ohm is current only after Ohm. Drift is millimetres per second, not c.
Resistivity
2. A material with a negative temperature coefficient is called a
- A. thermopile
- B. thermostat
- C. thermistor
- D. thermometer
View answer and explanation
Answer: C. thermistor
A thermistor is a resistor whose resistance changes markedly with temperature; NTC thermistors have a negative temperature coefficient (resistance falls as temperature rises). Thermopiles, thermostats and thermometers are different devices.
Ohm's Law
3. A resistance R is placed in parallel with another resistance 40 their equivalent resistance is 24 the value of R is?
- A. 40
- B. 60
- C. 80
- D. None of these
View answer and explanation
Answer: B. 60
This question tests parallel resistance. With 1/ + 1/R, solving gives 1/ - 1/ , so ohms. The values 40 and 80 ohms do not satisfy the parallel formula.
About this unit
MDCAT Current Electricity — Unit 45
1095 practice MCQs covering Electric Current, Ohm's Law, Resistivity, Internal Resistance, Maximum Power, Steady current, Power transfer, Ohm's law, Internal resistance. Select custom topics and sit tailored tests up to 180 questions per drill.
Common questions about Current Electricity practice
How many Current Electricity MCQs are available on DIFF. MDCAT?
The current Current Electricity question bank contains 1,095 practice MCQs across 9 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 Current Electricity quiz cover?
The selectable topics are Electric Current, Ohm's Law, Resistivity, Internal Resistance, Maximum Power, Steady current, Power transfer, Ohm's law, Internal resistance. 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 Current Electricity 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 Current Electricity 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 Current Electricity MCQs to improve?
Start with a short tutor drill on one of these topics: Electric Current, Ohm's Law, Resistivity. 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.