Answer Posted / michael j.

In an a/c transformer, because of the alternating current
in the primary coil, a current is induced in the secondary
coil because the wires in the secondary cut acroos the
magnetic field lines of the primary coil.(magnetic
inductance). a d/c current on the other hand does not have
a collapsing magnetic field because its current is
constant. therefore, no collapsing magnetic field means no
induced current.

The inventer is a battery, but if lost current at home u will turn on the fan but the is AC and inventer battery is dc . Then how the fan was rotating. What device Or machine in fan converst the Dc power to Ac power

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