CBSE Class 12-science Answered
explain the principle and working of a gold leaf electroscope?
Asked by zrajani | 01 Apr, 2012, 02:48: PM
Expert Answer
A gold-leaf electroscope is a simple device which is used to identify the electric charge present in a body.Their operation is based on the principle of like sign charge repulsion. Two sheets or leaves, cut longer than they are wide and made of very thin, electrically conductive material, are hung adjacent and virtually in contact with each other. The leaves are ordinarily made of material sufficiently thin so that they have no rigidity and hang down limply. When the leaves, which are electrically connected, become electrically charged, they push apart from each other. The angle they form correlates on the amount of electric charge on the leaves. See the figure below. If the instrument is shielded so that the capacitance is fixed, then the angle can be with some precision to static voltage. It should be noted that the electroscope actually indicates potential, not charge.
The leaf electroscope does not distinguish positive from negative charge, though there are some simple methods for doing so.
In a calibrated electroscope, the two leaves are made of fine hammered gold leaf and the voltage is determined by viewing and measuring the separation angle with a low-power microscope.
Answered by | 01 Apr, 2012, 03:14: PM
Concept Videos
-
Electric Charge - Part 1
This video describes the concept of charge, conductors and insulators, and ... -
Gold Leaf Electroscope - Part 1
This video explains the basic properties of electric charges. -
Coulom's Law of Electric Force - Part 1 ...
This video describes Coulomb's law to calculate the force between any two p... -
All about electric fields
Define electric field in terms of Coulomb's force. Apply superposition prin... -
Electric Field Lines
This video explains the representation of electric field due to a single ch...
CBSE 12-science - Physics
Asked by niharvijayvargiya5 | 23 Apr, 2024, 06:40: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by adityagalar2007 | 06 Apr, 2024, 01:06: PM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by amlanmcob | 06 Apr, 2024, 12:27: PM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by hussain221man | 05 Apr, 2024, 08:44: PM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by manishamunda787 | 02 Apr, 2024, 11:07: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by am1954077 | 08 Mar, 2024, 04:57: PM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by rishabhverma895334 | 01 Mar, 2024, 07:24: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by rameshsanju123 | 08 Feb, 2024, 08:45: PM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by sachin.sondur2012 | 07 Feb, 2024, 11:26: AM
ANSWERED BY EXPERT
