Physics, 17.08.2019 01:10 xrenay

How is an electromagnet different from a magnet?
a
a magnet depends upon strength of the current.
b
an electromagnet can be changed by changing the amount of current.
c
an electromagnet does not have an insulated coil like a permanent magnet
d
an electromagnet has an iron core and can not be adjusted

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How is an electromagnet different from a magnet?
a
a magnet depends upon strength of th...

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