A
a stationary electric charge, typically produced by friction, that causes sparks or crackling or the attraction of dust or hair.
Static Electricity
is exerted between any two charged objects.
Electric forces
Electric Fields
________ states that the current through a conductor between two points is directly proportional to the voltage across the two points.
Ohm's Law
__________states that: The magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them.
Coulombs Law
metals, aqueous solutions of salts, graphite, and the human body. plastics, Styrofoam, paper, rubber,glass and dry air.
Conductors and Insulators
Ohm's law defines the relationship between the ____________, current, and _____________ in an electric circuit
Resistance and Voltage
The fact that the light bulb lights and remains lit is evidence that charge is flowing through the light bulb filament and that an ___________has been established.
Electric Circuits
In a ____________, the current through each of the components is the same, and the voltage across the circuit is the sum of the voltages across each component. In a _______________, the voltage across each of the components is the same, and the total current is the sum of the currents through each component.
series and parallel Circuits
is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
Electric Charge
The Importance of ______________. It is important to follow the same systematic approach used for other occupational health and safety issues, when dealing with _____________. ... Four of the main types of injuries that occur as a result of electrical current include: electrocution, electric shock, burns, and falls.
Electricity Safety
When a device is connected to a _________ — a light bulb or an electric circuit — chemical reactions occur on the electrodes that create a flow of electrical energy to the device.
Battery
In _______________, the electric charge (current) only flows in one direction. Electric charge _______________, on the other hand, changes direction periodically.
Direct current and alternating current
is the rate, per unit time, at which electrical energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.
Electric Power
is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis.
Fossil Fuel