Electromagnetics

Electricity and magnetism are separate yet interconnected phenomena associated with the ​ (a)   . Together, they form the basis for ​ (b)   , a key physics discipline. You can have an electric field ​ (c)   a magnetic field, and vice versa. But, a moving electrical charge ​ (d)   has an associated magnetic field, while ​ (e)   have a magnetic field without an electrical current.

• electromagnetic force

• electromagnetism

• without

• always

• permanent magnets

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is Electromagnetics?

• the branch of science concerned with the nature and properties of matter and energy.

• the study of the relations between heat, work, temperature, and energy.

• Electromagnetics is a branch of physics or electrical engineering which is used to study this electromagnetic force and its fundamental laws

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

NGSS.HS-PS4-3

In ___, ________ discovered that a compass needle is deflected when placed near a circuit carrying an electric current.

• 1819, Michael Faraday

• 1819, Hans Oersted

• 1819, Joseph Henry

• 1819, William Gilbert.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

In __, ______ and, almost simultaneously, _______ showed that when a wire is moved near a magnet (or when a magnet is moved near a wire), an electric current is established in the wire

• 1831, Charles-François du Fay & Joseph Henry

• 1831, Alessandro Volta & James Clerk Maxwell

• 1831, Isaac Newton & Alessandro Volta

• 1831, Michael Faraday & Joseph Henry

Tags

NGSS.HS-PS2-5

In __, _______ used these observations and other experimental facts as a basis for formulating the laws of electromagnetism as we know them today. His formulated laws are basic to all forms of electromagnetic phenomena. His work is as important as Newton’s work on the laws of motion and the theory of gravitation.

• 1873, Isaac Newton

• 1873, James Clerk Maxwell

• 1873, Benjamin Franklin

• 1873, Michael Faraday

He built the first electric generator (the converse of the electric motor). He, in essence, demonstrated that a changing magnetic field induces an electric field (and hence a voltage).

• Heinrich Hertz

• Wilhelm Röntgen

• Joseph Thomson

• Michael Faraday

Tags

NGSS.HS-PS2-5

The converse relation, namely that a changing electric field induces a magnetic field, was first proposed by _______, in __ and then incorporated into his four (now) famous equations in 1873.

• James Clerk Maxwell, 1864

• Alessandro Volta, 1800

• Pieter van Musschenbroek, 1745

• Andre-Marie Ampère, 1820

Maxwell’s theory, which predicted the existence of electromagnetic waves, was not fully accepted by the scientific community at that time, not until verified experimentally by means of radio waves by __________ in the __

• William Gilbert, 1600

• Hans Christian Oersted, 1820

• Heinrich Hertz, 1880

• Nikola Tesla, 1888

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

__________ notes that parallel currents in wires attract each other and opposite currents repel.

• [1800]

  Alessandro Volta (Italian)

• [1820]

  Hans Christian Oersted (Danish)

• [1820]

  Andre-Marie Ampère (French)

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

___________ demonstrates the interconnection between electricity and magnetism through his discovery that an electric current in a wire causes a compass needle to orient itself perpendicular to the wire

• [1820]

  Jean-Baptiste Biot (French)

• [1820]

  Hans Christian Oersted (Danish)

• [1785]

  Charles-Augustin de Coulomb (French)

Tags

NGSS.HS-PS2-5