WorksheetsElectric Fields (Now!)
Total questions: 10
Worksheet time: 5mins
How do like charges behave toward each other?
Attracted
Repelled
No force
How do opposite charges behave toward each other?
Attracted
Repelled
No force
What does it mean to say that charge is conserved?
Charge is always the same.
Electrons are neither created nor destroyed but are transferred from one material to another.
Charge is never wasted.
How is Coulomb's law similar to Newton's law of gravitation? How is it different?
Both describe fields, obey an inverse-square relationship with distance, and have a proportionality constant; The law of gravitation can only be attractive while electrical forces may either attract or repel.
Both describe motion; Coulomb's law is French while Newton's law is English
Both use really big or small numbers; Coulomb's law only applies to the very large
What is the SI unit of charge?
Charge (C)
Celsius (C)
Coulomb (C)
Crumpet (C)
Which two methods of charging objects REQUIRES touching?
Friction
Contact
Induction
By how much is the electrical force between a pair of ions reduced when their separation distance is doubled (2x)? Tripled (3x)?
2 times less ; 3 times less
4 times less ; 9 times less
8 times less ; 27 times less
How is the strength of an electric field indicated with field LINES?
By the length of arrows
By the spacing of the lines
How is the strength of an electric field indicated with field VECTORS?
By the length of arrows
By the spacing of lines
What is meant by the expression action at a distance?
the idea that things not in contact can still exert forces on one another
the idea that you can do your job but stay at home
the idea that every action has an equal and opposite reaction
