Physics · May / June 2018 · Paper 12 · Question 34
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.