A circuit that has two or more separate branches for current is a ____.
The statement, current is equal to the voltage difference divided by the resistance, is known as
A static discharge differs from an electric current in that a static discharge ____.
lasts for only a fraction of a second
Electric charge that has accumulated on an object is referred to as ____.
Resistance is measured in a unit called the ____.
The rate at which an electrical device converts energy from one form to another is called
Which of the following is the correct relationship among power, current, and voltage?
P = I x V
A television that requires an average of 0.40 ampere of current is operated on a 120-volt service for 5.0 hours. How much energy is used?
One source of constant electric current is a ____.
A material through which electrons do not move easily is a(n) ____.
Lightning is ____.
a very large discharge of static electricity
The voltage ____ as current moves through a circuit.
Which of the following is a device designed to open an overloaded circuit and prevent overheating?
If a current flowing through a lightbulb is 0.75 ampere and the voltage difference across the lightbulb is 120 volts, how much resistance does the light bulb have?
If an air conditioner uses 1800 watts of power when plugged into a wall socket that operates at a voltage of 210 volts, what is the current flowing through the air conditioner?
allows electrons to move through it easily
closed path through which electrons flow
accumulation of electric charges on an object
circuit with more than one path
tendency of a material to oppose electron flow
does not allow electricity to move through it easily
push that causes charges to move
Surrounds electric charge and exerts force on other charges.
rate at which electrical energy is changed to another energy form
flow of electrons through a conductor
circuit with only one path
unit of electrical energy
Current is equal to the voltage difference of a circuit divided by its resistance.
car battery type
metal rod that directs lightning to Earth
device that detects electric charges
AAA - D battery type
how much power an applience uses
a small piece of wire that melts to prevent electical fire
a piece of metal that bends to prevent electrical fire
no current flows in this type of circuit
If the battery is a 9-volt battery and the resistance in the circuit is 18 ohms, how much current is flowing through the circuit? (I = V/R)