Electric Energy

What is electricity or electric energy?

• It´s the movement of protons inside a material

• It´s the movement of electric charges ( electrons) inside a material.

• It´s the movement of neutrons inside a material.

What is an electric current?

• It´s the movement of electric charges.

• It´s the movement of neutrons.

• It´s the movement of protons.

Electric charges are :

• Protons

• Neutrons

• Electrons

Tags

NGSS.MS-PS2-3

An electric current is the movement of electric charges inside a material.

• True

• False

Tags

NGSS.HS-PS2-5

Electric currents can be classified into two groups:

• Direct and indirect current.

• Direct and alternative current.

• Direct and alternating current.

In a direct current the electric charges circle in the same direction, and the current always maintains its polarity.

• True

• False

In an alternating current the electric charges always circle in the same direction,and the current´s polarity never varies.

• True

• False

Which of the following shows the symbol for a generator in an electric circuit?

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Which of the following shows the symbol for a receptor in an electric circuit?

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Which of the following shows the symbol for a switch in an electric circuit?

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