Answer :
The strength of the magnetic field of a coiled electrical wire can be increased by adding more coils to the wire.
What is electromagnetic induction?
According to the principle of electromagnetism, there is a flow of current when there is a relative motion between a magnetic field and a conductor.
Also, the strength of the magnetic field depends on the number of turns hence, the strength of the magnetic field of a coiled electrical wire can be increased by adding more coils to the wire.
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