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21 questions
Charges added to a conductor quickly spread over the surface of the object.
True
False
Electric charge is neither created nor destroyed; it is conserved.
True
False
Electric charges exist within atoms.
True
False
A series circuit has more than one path for the electric current to follow.
True
False
Like charges attract, whereas opposite charges repel.
True
False
A(n) ___ is described as a flow of charged particles.
resistor
electric current
electric circuit
resistance
A circuit that has two or more separate branches for current is a ___.
parallel circuit
series circuit
circuit diagram
electron circuit
The rate at which an electrical device converts energy from one form to another is called ___.
electrical energy
electrical resistance
electrical power
voltage regulation
Transferring charge by touching or rubbing is called ____.
a. charging by contact
b. convection
c. insulation
d. none of these
Electric charge that has accumulated on an object is referred to as ____.
a. circuit electricity
b. current circuit
c. current electricity
d. static electricity
An ____ is described as the flow of electric charge or current equal to one coulomb per second.
a. volt
b. capacitor
c. capacitance
d. ampere
The source of constant electric current is a ____.
a. coulomb
b. dry cell
c. switch
d. transformer
An area with excess electrons has a net ____ charge; an area with a deficit of electrons has a net ____ charge.
a. negative, positive
b. positive, negative
c. positive, neutral
d. negative, neutral
Resistance is measured in a unit called the ____.
a. ampere
b. watt
c. ohm
d. volt
Electric field lines are directed ____ positive charges and ____ negative charges.
a. away from, toward
b. toward, away from
c. parallel to, perpendicular to
d. perpendicular to, parallel to
____ is described as a property that determines how much current will flow for a given battery voltage.
a. Resistance
b. Resistor
Lightning is ____.
a buildup of neutrons
harmless
a buildup of protons
a large discharge of static electricity
Normally, atoms are electrically neutral because there are ____.
more protons than electrons
more electrons than protons
equal numbers of protons and neutrons
equal numbers of protons and electrons
Match the following
metal melts if too much current | Fuse | ||
Material in which electrons cannot move | Circuit Breaker | ||
Material in which electrons move freely | Electroscope | ||
metal bends if too much current | Conductor | ||
detects the presence of electric charges | Insulator |
Voltage difference is measured in ____.
volts
amps
ohms
watts
When no current flows through a circuit, it's called a(n) ____.
open circuit
series circuit
parallel circuit
bummer
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