Question text
30 A bar magnet is dropped through a vertical solenoid that is connected to a sensitive ammeter. S N A Y A current is induced in the solenoid and the solenoid becomes an electromagnet. Which row describes the polarity of end Y of the solenoid and the force between the solenoid and the bar magnet when the bar magnet leaves the solenoid? polarity of end Y force between solenoid of the solenoid and bar magnet A north attraction B north repulsion C south attraction D south repulsion
30 A bar magnet is dropped through a vertical solenoid that is connected to a sensitive ammeter.
S
N
A
Y
A current is induced in the solenoid and the solenoid becomes an electromagnet.
Which row describes the polarity of end Y of the solenoid and the force between the solenoid and
the bar magnet when the bar magnet leaves the solenoid?
polarity of end Y force between solenoid
of the solenoid and bar magnet
A north attraction
B north repulsion
C south attraction
D south repulsion
Select your answer: