Charge on van de graaff generator

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SUMMARY

The charge on a van de Graaff generator can be determined using the relationship Q = CV, where Q represents charge, C represents capacitance, and V represents voltage. The capacitance of the generator's dome, approximated in picofarads, is roughly equal to its radius in centimeters. For precise calculations, users should refer to established formulas available online. This method allows for the calculation of charge in microcoulombs when voltage is expressed in megavolts.

PREREQUISITES
  • Understanding of electrical charge (Q) and voltage (V)
  • Knowledge of capacitance and its measurement in picofarads
  • Familiarity with the formula Q = CV
  • Basic concepts of spherical capacitance
NEXT STEPS
  • Research the exact formula for capacitance of a sphere
  • Learn about measuring voltage in megavolts
  • Explore practical applications of van de Graaff generators in physics experiments
  • Investigate methods for calculating charge in different geometries
USEFUL FOR

Physics students, electrical engineers, and hobbyists interested in high-voltage experiments and the principles of electrostatics.

Danyon
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Is there any easy way to determine the charge on a van de graaff generator based on the voltage?
 
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If you could determine the capacitance of the dome, you could use the relationship involving Q, C and V.
 
NascentOxygen said:
If you could determine the capacitance of the dome, you could use the relationship involving Q, C and V.
The capacitance of a sphere in picofarads is very roughly equal to its radius in centimetres. Of course there will be an exact formula on Google. Then Q = CV (suggest microcoulombs, picofarads, megavolts)
 

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