Transformers By: Jake Alcivar and Nikolas Marchese

What creates an electromotive force across an electric conductor in the presence of a changing magnetic field?

• Electromagnetic Energy

• Electromagnetic Induction

• Electromagnetic Deduction

• Electromagnetic Waves

Who discovered electromagnetic induction and when?

• Michael Faraday in 1831

• Michel Darafay in 1831

• Michael Faraday in 1851

• Michael Gaines in 1821

Why can magnetic fields produce electricity?

• because fields just can produce electricity.

• because fields can push away protons.

• because moving magnetic fields can pull or push electrons

• None of the above.

What can we use to produce very strong electromagnets for use in many different types of electrical applications?

• Coils of wire wrapped or wound around a plastic bottle.

• Coils of wire wrapped or wound around a soft magnetic material.

• Coils of wire wrapped or wound around a roughs surface.

• None of the above.

What is a passive component that transfers electrical energy from one electrical circuit to another circuit?

• Autobots

• Electromagnets

• Decepticons

• Transformers

A transformer consists of two wire coils wrapped around an iron core.

• True

• False

Because the current is unchanging, the magnetic field of the iron core keeps reversing.

• True

• False

Coil Primary and Coil Secondary have the same number of turns of wire.

• The voltages of the primary and secondary currents are the same.

• The voltages of the primary and secondary currents are not the same.

A step-up transformer is when coil Secondary has fewer turns of wire than coil Primary.

• True

• False

A step-down transformer is when coil Secondary has fewer turns of wire than coil Primary.

• True

• False