Electrical and Magnetic Forces and Fields

is a fundamental property of matter, like mass. The units are Coulombs (C).

• Electric charge

• Insulators

• Conductors

• Motors

Tags

NGSS.HS-PS2-4

are materials in which many electrons can move freely. Most metals are this type of material.

• Electric charge

• Insulators

• Conductors

• Motors

Tags

NGSS.HS-PS3-5

are materials in which most electrons are fixed in place and cannot move around freely. Most non-metals are this kind of material.

• Electric charge

• Insulators

• Conductors

• Motors

Since electrons in a conductor are free to move around, they tend to spread out as much as possible because they repel. When two conductors with different charges touch the electrons spread out, causing the charges on the two conductors to balance. This is referred to as ______________ and only occurs between conductors.

• charge by conduction

• charge by friction

• charge by induction

• insulators

When two insulators are rubbed, one can take electrons from the other. This causes one object to become negative and the other to become positive. This is what occurs when you rub a balloon against your hair. The balloon steals electrons from your hair, making the balloon negative and the hair positive. Since the balloon and hair have opposite charges, they now attract. This type of charging is called _________________ and occurs between insulators.

• charge by conduction

• charge by friction

• charge by induction

• insulators

 When a charged object is brought near a conductor, the electrons in the conductor will move. This separation of charges due to the influence of another charge is called _____________.

• charge by conduction

• charge by friction

• charge by induction

• insulators

When two electric charges are near each other, they exert an electric force on each other. This force is directly proportional to the magnitudes of the two charges and inversely proportional to the distance between the charges squared. This is referred to as _____________.

• Law of Conservation of Mass

• Coulomb's Law

• charge by induction

• Snell's Law

Tags

NGSS.HS-PS2-4

_____________ is the direction when you point your finger towards the page. We represent this page with an “x”.

• Into the page

• Out of the page

• charge by induction

• None of the above

____________ the direction when you point your finger away from the page. We represent out of the page with dots or circles.

• Into the page

• Out of the page

• charge by induction

• None of the above

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

One of the most important features of magnets is their ability to interact with charges and current. We can use magnets to create an electric current in a wire. This process is known as ___________________.

• Into the page

• Out of the page

• Electromagnetic induction

• Conduction

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5