The result of converting 7 ev to joules is approximately 1.1224 × 10-18 joules.
Since 1 electronvolt (ev) equals about 1.6022 × 10-19 joules, multiplying this by 7 gives the energy in joules. This conversion uses the basic relationship between these units to translate particle energy levels into the SI measurement of energy.
Conversion Result
7 ev is equal to approximately 1.1224 × 10-18 joules.
Conversion Tool
Result in joules:
Conversion Formula
The conversion from ev to joules is based on the formula: energy (J) = energy (ev) × 1.6022 × 10-19. This works because the electronvolt is defined as the amount of kinetic energy gained or lost by an electron moving through an electric potential difference of 1 volt. By multiplying ev by this constant, we change units from particle energy to SI energy measurement. For example, converting 7 ev: 7 × 1.6022 × 10-19 = 1.1224 × 10-18 joules.
Conversion Example
- Convert 12 ev:
- Multiply 12 by 1.6022 × 10-19
- 12 × 1.6022e-19 = 1.92264e-18 joules.
- Convert 0.5 ev:
- Multiply 0.5 by 1.6022 × 10-19
- 0.5 × 1.6022e-19 = 8.011e-20 joules.
- Convert 20 ev:
- Multiply 20 by 1.6022 × 10-19
- 20 × 1.6022e-19 = 3.2044e-18 joules.
- Convert 3 ev:
- Multiply 3 by 1.6022 × 10-19
- 3 × 1.6022e-19 = 4.8066e-19 joules.
- Convert 15 ev:
- Multiply 15 by 1.6022 × 10-19
- 15 × 1.6022e-19 = 2.4033e-18 joules.
Conversion Chart
This chart shows values from -18.0 to 32.0 ev, converted into joules. Use it to estimate energy in joules for common ev values. Read across the table to find your desired value, then check the conversion in the second column. It helps to visualize the scale of energy differences.
| ev | Joules |
|---|---|
| -18.0 | -2.88396e-18 |
| -17.0 | -2.72476e-18 |
| -16.0 | -2.56556e-18 |
| -15.0 | -2.40636e-18 |
| -14.0 | -2.24716e-18 |
| -13.0 | -2.08796e-18 |
| -12.0 | -1.92876e-18 |
| -11.0 | -1.76956e-18 |
| -10.0 | -1.61036e-18 |
| -9.0 | -1.45116e-18 |
| -8.0 | -1.29196e-18 |
| -7.0 | -1.13276e-18 |
| -6.0 | -9.7356e-19 |
| -5.0 | -8.185e-19 |
| -4.0 | -6.6344e-19 |
| -3.0 | -5.0838e-19 |
| -2.0 | -3.5332e-19 |
| -1.0 | -1.9826e-19 |
| 0.0 | 0.0 |
| 1.0 | 1.6022e-19 |
| 2.0 | 3.2044e-19 |
| 3.0 | 4.8066e-19 |
| 4.0 | 6.4088e-19 |
| 5.0 | 8.011e-19 |
| 6.0 | 9.6132e-19 |
| 7.0 | 1.1224e-18 |
| 8.0 | 1.28264e-18 |
| 9.0 | 1.44288e-18 |
| 10.0 | 1.60312e-18 |
| 11.0 | 1.76336e-18 |
| 12.0 | 1.9236e-18 |
| 13.0 | 2.08384e-18 |
| 14.0 | 2.24408e-18 |
| 15.0 | 2.40432e-18 |
| 16.0 | 2.56456e-18 |
| 17.0 | 2.7248e-18 |
| 18.0 | 2.88504e-18 |
| 19.0 | 3.04528e-18 |
| 20.0 | 3.20552e-18 |
| 21.0 | 3.36576e-18 |
| 22.0 | 3.526e-18 |
| 23.0 | 3.68624e-18 |
| 24.0 | 3.84648e-18 |
| 25.0 | 4.00672e-18 |
| 26.0 | 4.16696e-18 |
| 27.0 | 4.3272e-18 |
| 28.0 | 4.48744e-18 |
| 29.0 | 4.64768e-18 |
| 30.0 | 4.80792e-18 |
| 31.0 | 4.96816e-18 |
| 32.0 | 5.1284e-18 |
Related Conversion Questions
- How many joules are in 7 ev?
- What is the energy equivalent of 7 electronvolts in joules?
- Can you convert 7 ev to joules accurately?
- What is the formula to convert ev to joules for 7 ev?
- How do I calculate joules from 7 ev manually?
- What is the energy in joules for 7 ev?
- How does 7 ev compare to joules in terms of energy?
Conversion Definitions
ev
Electronvolt (ev) is a unit of energy representing the work done to move an electron through an electric potential difference of 1 volt, equal to approximately 1.6022 × 10-19 joules, used mainly in atomic and particle physics.
joules
Joules (J) is the SI unit of energy, measuring the work done when a force of one newton moves an object one meter, or the heat transferred, widely used in physics and engineering to quantify energy amounts.
Conversion FAQs
Why is ev used in physics instead of joules?
Because ev is convenient for expressing energies at atomic scales and particle interactions, where energies are very small, making it easier to handle than the larger joule units, which are more suited for macroscopic energy measurements.
How precise is the conversion from ev to joules?
The conversion uses a fixed constant, 1.6022 × 10-19, so results are highly precise for most scientific purposes. Slight variations in the constant used might occur depending on the context or updated CODATA values, but generally, it’s very accurate.
Can I convert negative ev values to joules?
Yes, negative ev values represent energy release or absorption in certain reactions. When converted, the negative sign remains, indicating the direction of energy flow. The calculation process remains the same, multiplying by the constant.