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Question
Explain how a gold leaf electroscope is used for detection of charge on a body.
Explain how a gold leaf electroscope is used for detection of charge on a body.
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Solution
Charge identification by an electroscope:
- Take a negatively charged electroscope. Now touch the test conductor to the brass disc of the electroscope.
- If the metallic leaves of the electroscope diverge further then this indicates that the test conductor carries a charge of the same nature.
- In other words the test conductor is negatively charged.
- But if the leaves of the electroscope come closer or collapse, then the test conductor carries the charge of the opposite nature or it is positively charged.
- The same test can be performed using a positively charged conductor.
Charge identification by a Negatively charged gold-leaf electroscope:
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Charge identification by a positively charged gold leaf electroscope:
Charge identification by an electroscope:
- Take a negatively charged electroscope. Now touch the test conductor to the brass disc of the electroscope.
- If the metallic leaves of the electroscope diverge further then this indicates that the test conductor carries a charge of the same nature.
- In other words the test conductor is negatively charged.
- But if the leaves of the electroscope come closer or collapse, then the test conductor carries the charge of the opposite nature or it is positively charged.
- The same test can be performed using a positively charged conductor.
Charge identification by a Negatively charged gold-leaf electroscope:
Charge identification by a positively charged gold leaf electroscope:
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