Charges
T/F: Negatively charged objects contain more electrons that protons.
True
Current is the rate in which electrons flow past a point within a complete electric current and is measured in ___.
Amperes (amp)
What is charging objects without actually touching them called?
Induction
Definition of electric force
Electric force per unit charge
A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, buto of opposite sign
Proton
Two objects with opposite types of charges will ____ each other
Attract
What type of circuit is more efficient and practical for common use: series circuit or parallel circuit.
Parallel Circuit
What type of charging is it when two objects on different ends of the triboelectric series are rubbed together, causing electrons to transfer from one object to another?
Charging by friction
What direction are electric field lines around a proton?
Away from the charge
The tiny, massive, positively charged central core of an atom
Nucleus
What does electron affinity describe?
How likely an object is to give up its electrons and become positive
What are the three basic components of electricity?
Voltage, Currents, and Resistance
Oil, wood, and glass are examples of what?
Insulators
What does electric field strength depend on?
Charge and distance
What would make an atom electrically “neutral”?
The atom has an equal amount of protons and electrons.
The quantity of charge possessed by an object depends upon the ____.
Relative number of protons and electrons
What is each current path in a parallel circuit called?
A branch
What is another way to charge by induction?
Inducing polarization and grounding the object.
How do you calculate electric field strength?
E = kq/d^2
Electrons have a much ____ mass than protons and neutrons.
Smaller
How many electrons amount to -1C of charge?
6.25 x 10^18
The definition of Amperes
The flow of electrical charge across a surface at the rate of one coulomb per second.
What is the result of reducing polarization?
An object with the opposite charge of whatever induced the polarization.
Name the 3 characteristics of electric field lines.
Electric field lines never cross, are drawn perpendicular to a surface, and the line spacing indicates strength, following the inverse square law.
Empty space