Physics Worksheet 4 (Standard Units of Measurement)

What unit results when a coulomb is divided by a second? a.) Ampere b.) Hertz c.) Ohm d.) Rad e.) Volt

A) Ampere

Which of the following is a unit of energy? a.) Gray b.) Joule c.) Newton d.) Rad e.) Sievert

B) Joule

Which of the following is a unit of electric potential? a.) Joule b.) kVp c.) mA d.) mAs e.) Newton

B) kVp

Which of the following is NOT a system of units? a.) British b.) CGS c.) French d.) MKS e.) SI

C) French

Which of the following is an SI-derived unit? a.) Dyne b.) Horsepower c.) Joule d.) Kelvin e.) Roentgen

C) Joule

The fundamental unit of force is the: a.) Coulomb b.) Joule c.) Newton d.) Roentgen e.) Volt

C) Newton

Which of the following is NOT a base quantity in the SI? a.) Electric current b.) Mass c.) Radiation exposure d.) Temperature e.) Time

C) Radiation exposure

Which of the following has units of s^-1? a.) Dose b.) Exposure c.) Frequency d.) Time e.) Velocity

C) Time

What common radiologic unit results from the following? millicoulomb x second = a.) ESE b.) kVp c.) mA d.) PBL e.) SID

C) mA

The radiologic unit milliampere-second (mAs) is actually a measure of: a.) Electric charge b.) Electric potential c.) Number of electrons d.) Potential difference e.) X-ray intensity

C)Number of electrons

Water has a mass density of 1g/cm3. Its density is also: a.) 10^-3 kg/m3 b.) 1 kg/m3 c.) 10 kg/m3 d.) 10^3 kg/m3 e.) 10^5 kg/m3

D) 10^4 kg/m3

SI stands for which of the following? a.) Inconsistent system b.) Incorrect system c.) Le Systeme Institutional d.) Le Systeme Inernational d'Unites e.) System International

D) Le Systeme Inernational

A kilogram is the: a.) Energy required to raise 1lb of water 1C b.) Mass of a standard gold bar c.) Mass of 1 lb of water d.) Mass of 1000 cm3 of water e.) Temperature raise of 1 lb of water

D) Mass of 1000 cm3 of water

Which of the following is expressed in the proper units? a.) Absorbed dose: Sv b.) Activity: rem c.) Dose equivalent: rad d.) Exposure: Bq e.) Exposure: mGy

E) Exposure: mGy

Which of the following is an SI base unit? a.) Becquerel b.) Coulomb c.) Colombo/kilogram d.) Geay e.) Kilogram

E) Kilogram

The unit of measure that is the same for all systems of measure is the: a.) Calorie b.) Kilogram c.) Meter d.) Pound e.) Second

E) Second

Which of the following is an SI name for a base unit? a.) Celsius b.) Kilovolt c.) Milliampere d.) Newton e.) Second

E) Second

Which of the following standards of SI measure is CORRECT? a.) The foot was measured by King Henry VII b.) The meter is related to the visible emission from the sun c.) The meter is the length of an engraved platinum-iridium bar d.) The second is based on the rotation of the Earth around the sun e.) The second is based on the vibrations of cesium atoms

E) The second is based on the vibrations of cesium atoms