Physics for IGCSE & O level - Magnets And Currents (Section 1 - No. 10)
How is a voltage induced in a wire?
By passing a wire through a magnetic field.
By applying a voltage directly to the wire.
By heating the wire.
By connecting the wire to a battery.
คำอธิบาย
A voltage (e.m.f.) is induced in a wire when it moves through a magnetic field.