Physics · May / June 2018 · Paper 11 · Question 27
5054Magnetic effect of a current
The diagram shows an alarm system. What happens when battery P is disconnected?
- Airon armature: falls; bell: rings
- Biron armature: falls; bell: stops ringing
- Ciron armature: moves up; bell: rings
- Diron armature: moves up; bell: stops ringing
As printed in the paper
Show the answer
Correct answer: A. iron armature: falls; bell: rings
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.