Electromagnetic Induction and AC
Faraday's and Lenz's laws, inductance, LCR circuits, resonance, power factor, transformers and the EM spectrum.
- Questions
- 10
- Duration
- 20 min
- Maximum marks
- 40
- Marking
- +4 / −1
Instructions
- 1
The test opens in fullscreen when you press Start. Keep it in fullscreen until you submit.
- 2
Switching tabs, minimising the browser, opening another app or window, leaving fullscreen or reloading the page counts as leaving the test.
- 3
Every time you leave, you get a warning. You have 3 warnings. If you leave again after the last one, your test is submitted automatically.
- 4
The timer keeps running the whole time, including while a warning is on screen. At zero, the test is submitted automatically.
- 5
Marking: +4 for a correct answer, −1 for a wrong answer and 0 for a question you leave unanswered.
- 6
Your answer is saved as soon as you pick an option. Use "Mark for review" to flag a question you want to come back to.
Topics covered
- Faraday's law
- Lenz's law
- Inductance
- LCR circuits
- Resonance
- Transformers
- EM spectrum