RLC circuits topic check
See what you already know about H3 Physics RLC circuits, practise what needs work, then come back later to review it.
Learning goals
- Define self-inductance as induced e.m.f. per unit rate of change of current, and use V = L dI/dt
- Describe mutual inductance as a circuit's tendency to oppose a change of current in a nearby circuit
- Explain qualitatively how a dielectric increases capacitance and why a strong enough field causes dielectric breakdown
- Explain qualitatively how a ferromagnetic core increases inductance, non-linearly near saturation
- Apply U = ½LI² to the energy stored in an inductor.
- Derive the expression U = ½LI² for the potential energy stored in an inductor by considering the work done on charges.
- Calculate the combined inductance of inductors in series and in parallel
- Solve RL series circuits with a constant e.m.f. using first-order differential equations
- Solve LC series circuits without an e.m.f. source using second-order differential equations
- Solve problems on RLC series circuits without an e.m.f. source by verifying and using given solutions
Your next step
Check what I know
Start with a check of what you already know. Answer each question and say how sure you are. We'll use this to suggest what to practise next.
Finding your next step…
Check what I know
Start here to see which parts you already know.
About 8 minutes
Checking question availability…
Time is up, but your answers have not been submitted yet. Check your connection and try again.
Answer 4 short questions. It shows what to work on next and doesn't count towards course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise
Work through questions with marking and feedback as you learn.
About 10 minutes
Practice: the questions you got wrong. This doesn't count towards your progress.
Checking question availability…
Time is up, but your answers have not been submitted yet. Check your connection and try again.
Questions are picked at random each time you start. You'll see the answer after each question. It's for practice only and doesn't count towards course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise after feedback
After a check, practise the skills it showed you need to work on.
About 10 minutes
Practice: the questions you got wrong. This doesn't count towards your progress.
Checking question availability…
Time is up, but your answers have not been submitted yet. Check your connection and try again.
Questions are picked at random each time you start. You'll see the answer after each question. It's for practice only and doesn't count towards course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Check my progress
When you feel ready, answer on your own to show what you can do.
About 10 minutes
Practice: the questions you got wrong. This doesn't count towards your progress.
Checking question availability…
Time is up, but your answers have not been submitted yet. Check your connection and try again.
Answer 6 questions. You'll see your score, the answers and explanations at the end. Your result can count towards your course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Check again
After practising what your progress check showed, check those skills again.
About 10 minutes
Practice: the questions you got wrong. This doesn't count towards your progress.
Checking question availability…
Time is up, but your answers have not been submitted yet. Check your connection and try again.
Answer 6 questions. You'll see your score, the answers and explanations at the end. Your result can count towards your course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Review
Come back later to see whether your learning has lasted.
About 10 minutes
Practice: the questions you got wrong. This doesn't count towards your progress.
Checking question availability…
Time is up, but your answers have not been submitted yet. Check your connection and try again.
Answer 6 questions. You'll see your score, the answers and explanations at the end. A scheduled review counts towards your course progress only when it is due.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise: multiple-choice
Work through questions with marking and feedback as you learn.
About 10 minutes
Practice: the questions you got wrong. This doesn't count towards your progress.
Checking question availability…
Time is up, but your answers have not been submitted yet. Check your connection and try again.
Questions are picked at random each time you start. You'll see the answer after each question. It's for practice only and doesn't count towards course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise: written
Work through questions with marking and feedback as you learn.
About 10 minutes
Practice: the questions you got wrong. This doesn't count towards your progress.
Checking question availability…
Time is up, but your answers have not been submitted yet. Check your connection and try again.
Questions are picked at random each time you start. You'll see the answer after each question. It's for practice only and doesn't count towards course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Next step