Which best describes Jodi’s error?
Electrons move from areas of high to low electric potential
.
Which most likely has the greatest conductivity quizlet?
As we know that
copper
is a very good conductor of electricity and it is warm which enables the electrons to move faster and easily, copper is the correct answer.
What caused the electric charges to flow from one end of the battery to the other?
When a positive charged object is placed near a conductor electrons are attracted the the object. Metals contain free moving delocalized electrons. When electric voltage is applied,
an electric field within the metal triggers the movement of the electrons
, making them shift from one end to another end of the conductor.
What is required for an electric charge to flow through a wire quizlet?
What is required for an electric charge to flow through a wire? … 1)
Movement of electrons is continuous in a current
. 2) Electrons move from areas of low to high electric potential. 3) Voltage causes current to flow.
Which symbol and unit of measurement are used for voltage quizlet?
A voltage is measured with a voltmeter and is given the
symbol V
. Voltage is measured across the circuit device. A current is measured with an ammeter and is given the symbol I. Current is measured through a circuit device.
Which most likely had the greatest conductivity?
Silver
has the highest electrical conductivity of all metals. In fact, silver defines conductivity – all other metals are compared against it. On a scale of 0 to 100, silver ranks 100, with copper at 97 and gold at 76.
Which equation is correct according to Ohm’s law quizlet?
Ohm’s law states that the voltage V is directly proportional to the current I, according to
V = IR
, where R is the resistance.
Why does current flow from negative to positive?
The particles that carry charge through wires in a circuit are mobile electrons. The electric field direction within a circuit is by definition the direction that positive test charges are pushed. Thus, these
negatively charged electrons move in the direction opposite the electric field
.
What causes electricity to flow?
Atoms are made up of protons, neutrons, and electrons. Electricity is created
when an outside force causes electrons to move from atom to atom
. The flow of electrons is called an “electrical current.” … Voltage is the “outside force” that causes electrons to move.
What are the 3 types of circuits?
There are actually 5 main types of electrical circuits:
Close circuit, open circuit, short circuit, series circuit, and parallel circuit
. Each type of circuit is designed to create a conductive path of current or electricity.
What is required for an electrical charge to flow?
To produce an electric current, three things are needed: a supply of electric charges (electrons) which
are free to flow
, some form of push to move the charges through the circuit and a pathway to carry the charges. The pathway to carry the charges is usually a copper wire.
What unit is used to measure potential difference?
Volt, unit of electrical potential, potential difference and electromotive force in the metre–kilogram–second system (SI); it is equal to the difference in potential between two points in a conductor carrying one ampere current when the power dissipated between the points is one watt.
Why is copper used for most electrical wiring?
With its exceptional current carrying capacity, copper is more efficient than any other electrical conductor
Because of its superior conductivity
, annealed copper is the international standard to which all other electrical conductors are compared . … Another advantage is that copper oxide also conducts electricity.
Which statement describes an open circuit?
Closing the valve stops the flow of water, but opening a switch stops the flow of charges. Which statement describes an open circuit?
The circuit is incomplete and broken, and the lights in the circuit do not shine.
What units is used to measure resistance?
The Ohm (Ω)
is a unit of electrical resistance equal to that of a conductor in which a current of one ampere is produced by a potential of one volt across its terminals. Ohm’s law, named after its discoverer the German physicist Georg Ohm, is one of the most important, basic laws of electricity.
What is another term for electromotive force EMF )? Group of answer choices?
VOLTAGE
– That force which is generated to cause current to flow in an electrical circuit. It is also referred to as electromotive force or electrical potential. Voltage is measured in volts.
