Question

or a galvanometer) is connected to a coil of wire. When there is no as the curremeter stays at the middle (zero current location) when coil current, indicator of th e current left to right ammeter scales to the right and when current flows righ oppositely it scales to the left. 15 points 1. If end is near the coil and perpendicular to the plane of the coil as ad nagnet is sitting motionless next to the wire such that its south shown. What direction will indicate in the meter scale? If you move the magnet toward the coil what direction will indicate in the meter scale ? Now you keep it in motionlessly, what will indicate in the meter scale? Now you bring the magnet backward, what direction will indicate in the scale? if you flip the magnet such as north pole towards the coil and then you bring north pole towards the 2. 3. 4. 5. coil what direction will indicate in the meter scale ? 6. Now you move away the north pole from the coil, what direction will indicate in the meter scale?

please help me understand this question.
If you could answer and explain I would really appreciate it. Thank you!

Answer 1

1.

middle

when the magnet is sitting motionless near the coil, the magnetic flux linked to the coil does not change. hence no current is induced in the coil. So indicator of the ammeter stays at the middle.

2.

ammeter scales to right

as the magnet is moved towards the coil, the magnetic flux linked to the coil will increase and hence current will be induced in the coil.

3.

middle

when the magnet is sitting motionless near the coil, the magnetic flux linked to the coil does not change. hence no current is induced in the coil. So indicator of the ammeter stays at the middle.

4.

ammeter scales to left

as the magnet is moved backward, the magnetic flux linked to the coil will decrease and hence current will be induced in the coil in opposite direction.