Physics 112 Exams 1 & 2 - Questions & Verified Answers
What letter symbolizes the atomic number of an element? Z
When were X-rays discovered? November 8, 1895
What is the maximum number of electrons in the 8
outermost shell, except for the K shell?
Which device allows electricity to flow in one direction Diode
only?
What is the flow of electrons along a conductor called? Electric current
Electromagnetic radiation is a form of energy that Something moving in space
originates from what?
Where are rectifiers found? Secondary circuit
Rubber and glass are what type of materials? Insulators
What unit is matter measured in? Kilograms
What formula calculates the maximum number of electrons 2n²
in an electron shell?
Where do charges concentrate on the surface of an Sharpest curvatures
electrified object?
What does a step-up transformer result in? Decreased current
What is Ohm's law? I = V/R
Which material is a good conductor? Copper
What is a special quantity of radiologic science? Radioactivity
Stuvia | Academic Year (2026-2027)
, Physics 112 Exams 1 & 2 - Questions & Verified Answers
Which is NOT a correct law of electrostatics? Electric charges reside only on the internal surface of conductors
What device uses direct current? Flashlight
What is a closed pathway of wires and related elements Electric circuit
called?
Photons with the highest frequencies have what? Shortest wavelengths
What must be present in the primary coil to induce voltage Alternating current in the primary coil of wire
in the secondary coil with mutual induction?
What is current that changes direction in a conductor Alternating current
called?
If the wavelength of electromagnetic radiation increases by Decreases by half
a factor of 2, what happens to frequency?
X-rays are usually identified by what? Energy
Are all electromagnetic radiations capable of ionizing False
matter?
What is the degree to which a material can be magnetized Magnetic susceptibility
called?
What does the atomic nucleus contain? Protons and neutrons
When an atom becomes negatively or positively charged, it Electrons
is usually due to a change in the number of what?
What is the purpose of grounding? Neutralize a charged object
When atoms of various elements combine, what do they Molecules
form?
When a conductor is longer, what happens to resistance? Resistance increases
Stuvia | Academic Year (2026-2027)
, Physics 112 Exams 1 & 2 - Questions & Verified Answers
What is the smallest unit of electrical charge? Electron
What is the electrical charge of an atom in its normal Zero
state?
Electromagnetic radiation has properties of a wave and a True
particle. Is this true?
1 kilohertz (kHz) is equal to how many hertz? 1000 hertz
What relationship does Einstein's formula E = mc² Matter and energy
demonstrate?
A material that is weakly repelled by a magnetic field is Diamagnetic
classified as what?
What is the study of electric charges in motion called? Electrodynamics
What is the ampere the unit of measure for? Electric current
Work is the product of what and distance? Force
Opposite charges attract; unlike charges repel. Is this true? False
What letter symbolizes the innermost electron shell? K
Does mass change with gravitational force? False
Who first used the term "atom"? Greeks
Mutual induction involves electricity being induced into Secondary coil
what?
A transformer with 100 times more turns on the secondary Step-up transformer
side than the primary is what?
Stuvia | Academic Year (2026-2027)
What letter symbolizes the atomic number of an element? Z
When were X-rays discovered? November 8, 1895
What is the maximum number of electrons in the 8
outermost shell, except for the K shell?
Which device allows electricity to flow in one direction Diode
only?
What is the flow of electrons along a conductor called? Electric current
Electromagnetic radiation is a form of energy that Something moving in space
originates from what?
Where are rectifiers found? Secondary circuit
Rubber and glass are what type of materials? Insulators
What unit is matter measured in? Kilograms
What formula calculates the maximum number of electrons 2n²
in an electron shell?
Where do charges concentrate on the surface of an Sharpest curvatures
electrified object?
What does a step-up transformer result in? Decreased current
What is Ohm's law? I = V/R
Which material is a good conductor? Copper
What is a special quantity of radiologic science? Radioactivity
Stuvia | Academic Year (2026-2027)
, Physics 112 Exams 1 & 2 - Questions & Verified Answers
Which is NOT a correct law of electrostatics? Electric charges reside only on the internal surface of conductors
What device uses direct current? Flashlight
What is a closed pathway of wires and related elements Electric circuit
called?
Photons with the highest frequencies have what? Shortest wavelengths
What must be present in the primary coil to induce voltage Alternating current in the primary coil of wire
in the secondary coil with mutual induction?
What is current that changes direction in a conductor Alternating current
called?
If the wavelength of electromagnetic radiation increases by Decreases by half
a factor of 2, what happens to frequency?
X-rays are usually identified by what? Energy
Are all electromagnetic radiations capable of ionizing False
matter?
What is the degree to which a material can be magnetized Magnetic susceptibility
called?
What does the atomic nucleus contain? Protons and neutrons
When an atom becomes negatively or positively charged, it Electrons
is usually due to a change in the number of what?
What is the purpose of grounding? Neutralize a charged object
When atoms of various elements combine, what do they Molecules
form?
When a conductor is longer, what happens to resistance? Resistance increases
Stuvia | Academic Year (2026-2027)
, Physics 112 Exams 1 & 2 - Questions & Verified Answers
What is the smallest unit of electrical charge? Electron
What is the electrical charge of an atom in its normal Zero
state?
Electromagnetic radiation has properties of a wave and a True
particle. Is this true?
1 kilohertz (kHz) is equal to how many hertz? 1000 hertz
What relationship does Einstein's formula E = mc² Matter and energy
demonstrate?
A material that is weakly repelled by a magnetic field is Diamagnetic
classified as what?
What is the study of electric charges in motion called? Electrodynamics
What is the ampere the unit of measure for? Electric current
Work is the product of what and distance? Force
Opposite charges attract; unlike charges repel. Is this true? False
What letter symbolizes the innermost electron shell? K
Does mass change with gravitational force? False
Who first used the term "atom"? Greeks
Mutual induction involves electricity being induced into Secondary coil
what?
A transformer with 100 times more turns on the secondary Step-up transformer
side than the primary is what?
Stuvia | Academic Year (2026-2027)
