Understanding Induced Movement of Coil and Magnet

[IvaNMK]

What is the answer? Should be B

Please Explain the reason behind

I don't understand how an induced Magnetic Field will cause the coil to move.

(Not Homework)Source:tycphysics.org/TIPERs/TIPER%206_20_02_keys%20pdf/EMI%205a_Key_6_02.pdf

thanks for helping

 

[bipolar]

Is an electrically induced magnetic field somehow different from a magnetic field produced by a permanent magnet?

When a magnet moves through the coil of wire, a current is induced in the wire. When current is flowing through a wire, a magnetic field is generated around the wire. If another magnetic field is present, they will interact.

Induction Motor

 

[Bob S]

B is true if the coil of wire is shorted. The dB/dt linking the coil will develop a voltage around and hence a current in the wire that opposes the field of the magnet.