ImagingEquipmentMaintenance Flashcards
(43 cards)
On the surface of an electrified object, the charges concentrate on the _____.
sharpest curvatures
A _____ is a source of direct current.
Battery
What is the unit of electric potential?
Volt
An electric potential applied to a conductor produces _____
an electric current
a magnetic field
An alternating (AC) current is represented by a _____ line.
Sinusoidal
A _____ uses direct current.
Flashlight
Alternating current is produced by a _____.
Generator
What is Ohm’s law?
V=IR
A charged particle in motion creates a(n) _____.
magnetic field
Electrical power is measured in _____.
Watts
Rubber and glass are _____.
Insulators
The rotation of electrons on their axis is the property called _____.
electron spin
In the United States, alternating current goes through a complete cycle every _____ second.
1/60
The three main parts of the x-ray imaging system are the x-ray tube, _____, and _____.
operating console, high voltage generator
The study of stationary electric charges is called
Electrostatics
The smallest unit of electric charge/s is/are
Electron
An electron, being greatly smaller than a proton in terms of mass, has the same magnitude as the latter.
True
The electrification created by rubbing a balloon on your hair causes the electrons from your hair to the balloon.
Friction
Then an electrically charge plastic ruler touches an uncharged metal rod, the electrons on the ruler travel to the rod. This is an example of __________
Contact
A negatively charge balloon makes a small section of a metal beam have a positive charge through ____________.
Induction
One ampere is the flow of one coulomb per second; therefore “mAs” is a measure of what quantity?
Amperes
The electric charge distribution on the surface of a conductor is evenly distributed
True
When a positive charge and a negatively charge particle are brought close to each other, they will likely
Attract each other
The electric charge of a conductor is concentrated on the
Sharpest curve
