Capactor as static electricity generator

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SUMMARY

A capacitor can indeed function as a static electricity generator, as demonstrated in early experiments with devices like the Leyden jar and electrophorus. When a capacitor is charged and one terminal is grounded, the remaining charge can create a detectable net positive charge, which can influence a pith ball. However, the voltage of the capacitor limits the maximum charge that can be transferred to the pith ball, meaning that a larger capacitor at the same voltage will not increase the charge on the ball beyond that voltage.

PREREQUISITES
  • Understanding of capacitor charging and discharging principles
  • Familiarity with static electricity concepts
  • Knowledge of early static electricity devices like Leyden jars and electrophoruses
  • Basic principles of electric charge detection using pith balls
NEXT STEPS
  • Research the principles of capacitor charging and discharging in detail
  • Explore the historical significance and functionality of the Leyden jar
  • Learn about the construction and operation of an electrophorus
  • Investigate methods for measuring static electricity using various detectors
USEFUL FOR

This discussion is beneficial for physics students, educators, and hobbyists interested in static electricity experiments and the practical applications of capacitors in generating static charges.

deval vyas
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Suppose I first charge a capacitor so that one plate is positively charged and another negatively. Now I remove the charging source and ground only one of the terminals say negative terminal, will there be a net positive charge in the capacitor that can be detected by a pith ball?
Can a capacitor be used as static electricity generator?
 
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Early static electricity experiments , Leyden jar , electrophorus
 
Yes you can do it. But the ball will only charge to the capacitor voltage. A bigger capacitor at the same voltage will not charge the ball any higher.
 

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