
Which of the following units represent the largest amount of energy?
A.Electron-volt
B.Erg
C.Joule
D.Calorie
Answer
447.6k+ views
Hint: Electron volt, erg, joule and calorie all are the units of energy. Convert electron-volt, erg and calorie to joule and find out which of the following has the highest value.
Complete step by step answer:
Convert electron-volt to joule:
Convert erg to joule:
Convert calorie to joule:
Thus, the highest value is . Thus, the unit that represents the largest amount of energy is calorie.
So, the correct answer is Option D .
Additional Information:
Some commonly used units of energy are:
Barrel of oil: It is a unit of measuring volume.
Calorie: One calorie equals .
Horsepower: It is used to measure power. One watt equals to .
Joule: It is an SI unit of energy and work. One joule equals one newton meter.
Kilowatt-hour: one kilowatt-hour equals one thousand watt hours.
Kilowatt: It is one thousand watt of electricity.
Megajoule: One megajoule equals one million joules.
Megawatt: One megawatt equals one million watts.
Unit of electricity: One unit of electricity equals one kilowatt-hour.
Volt: It is used to measure electric potential or electromotive force.
Watt (Electric): It is the electrical unit of power.
Watt Hour: It is used to measure electrical energy.
Note:
The amount of kinetic energy lost or gained by an accelerating electron at rest when an electric potential difference of one volt is applied to it is known as electron-volt.
The unit of energy equal to is known as erg.
The unit of energy or work equal to is known as joule.
The energy required to raise the temperature of water by is known as calorie.
Complete step by step answer:
Convert electron-volt to joule:
Convert erg to joule:
Convert calorie to joule:
Thus, the highest value is
So, the correct answer is Option D .
Additional Information:
Some commonly used units of energy are:
Barrel of oil: It is a unit of measuring volume.
Calorie: One calorie equals
Horsepower: It is used to measure power. One watt equals to
Joule: It is an SI unit of energy and work. One joule equals one newton meter.
Kilowatt-hour: one kilowatt-hour equals one thousand watt hours.
Kilowatt: It is one thousand watt of electricity.
Megajoule: One megajoule equals one million joules.
Megawatt: One megawatt equals one million watts.
Unit of electricity: One unit of electricity equals one kilowatt-hour.
Volt: It is used to measure electric potential or electromotive force.
Watt (Electric): It is the electrical unit of power.
Watt Hour: It is used to measure electrical energy.
Note:
The amount of kinetic energy lost or gained by an accelerating electron at rest when an electric potential difference of one volt is applied to it is known as electron-volt.
The unit of energy equal to
The unit of energy or work equal to
The energy required to raise the temperature of
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