Investigating Currents and Fields Quick Check

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Which action will increase the current in the wire?

adding more cells

As part of an experiment, a student wraps a wire in an electric circuit around an iron core, producing a magnetic field. Which phrase best describes the resulting apparatus?

an electromagnet

What will happen if the bar magnet remains stationary and the coil of wire is moved back and forth within the magnetic field?

A current will be induced in the coil of wire.

A student conducts an investigation on electricity and magnetism. Which relationship will the student discover between the current and the magnetic field strength in a coiled wire?

As current increases, the magnetic field strength increases.

Which statement describes how the coil of wire is similar to a bar magnet?

They both have north and south magnetic poles.


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