How does an electric coil work?

Answer

when u give supply to a coil then a current will be passed through it .
naturally a magnetic field is produced around the c.c.c(current carrying conductor). when u make more turns in the same direction the whole magnetic field will be stronger than that of a wire has.

and
by lenz's law there will be an opposition to the changing current in a coil due to the change in magnetic field produced

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