Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > 1 eV of energy is equivalent to a)2.0 ergb)1....
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1 eV of energy is equivalent to –
- a)2.0 erg
- b)1.6 × 10–19 joule
- c)0.16 × 10–19 joule
- d)3.14 × 10–9 joule
Correct answer is option 'B'. Can you explain this answer?
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1 eV of energy is equivalent to a)2.0 ergb)1.6 1019 joulec)0.16 1019...
Conversion of 1 eV to joules:
1 eV (electron volt) is a unit of energy commonly used in atomic and particle physics. To convert it to joules, we can use the conversion factor that relates the electron volt to the joule.
The conversion factor is given by:
1 eV = 1.6 x 10^-19 J
This means that 1 electron volt is equal to 1.6 x 10^-19 joules.
Explanation of the options:
a) 2.0 erg:
An erg is another unit of energy, commonly used in the centimeter-gram-second (CGS) system. To convert it to joules, we can use the conversion factor that relates the erg to the joule.
The conversion factor is given by:
1 erg = 10^-7 J
Therefore, 2.0 erg is equal to 2.0 x 10^-7 joules. This is not equal to 1 eV.
b) 1.6 x 10^19 joule:
This is the correct conversion. As mentioned earlier, 1 eV is equal to 1.6 x 10^-19 joules.
c) 0.16 x 10^19 joule:
This is not the correct conversion. The conversion factor mentioned earlier is 1.6 x 10^-19 joules, not 0.16 x 10^19 joules.
d) 3.14 x 10^9 joule:
This is not the correct conversion. The conversion factor mentioned earlier is 1.6 x 10^-19 joules, not 3.14 x 10^9 joules.
Conclusion:
The correct conversion of 1 eV to joules is 1.6 x 10^-19 joules. Therefore, option B is the correct answer.
1 eV (electron volt) is a unit of energy commonly used in atomic and particle physics. To convert it to joules, we can use the conversion factor that relates the electron volt to the joule.
The conversion factor is given by:
1 eV = 1.6 x 10^-19 J
This means that 1 electron volt is equal to 1.6 x 10^-19 joules.
Explanation of the options:
a) 2.0 erg:
An erg is another unit of energy, commonly used in the centimeter-gram-second (CGS) system. To convert it to joules, we can use the conversion factor that relates the erg to the joule.
The conversion factor is given by:
1 erg = 10^-7 J
Therefore, 2.0 erg is equal to 2.0 x 10^-7 joules. This is not equal to 1 eV.
b) 1.6 x 10^19 joule:
This is the correct conversion. As mentioned earlier, 1 eV is equal to 1.6 x 10^-19 joules.
c) 0.16 x 10^19 joule:
This is not the correct conversion. The conversion factor mentioned earlier is 1.6 x 10^-19 joules, not 0.16 x 10^19 joules.
d) 3.14 x 10^9 joule:
This is not the correct conversion. The conversion factor mentioned earlier is 1.6 x 10^-19 joules, not 3.14 x 10^9 joules.
Conclusion:
The correct conversion of 1 eV to joules is 1.6 x 10^-19 joules. Therefore, option B is the correct answer.
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1 eV of energy is equivalent to a)2.0 ergb)1.6 1019 joulec)0.16 1019 jouled)3.14 109 jouleCorrect answer is option 'B'. Can you explain this answer?
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