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The sphere of an electroscope is always neutral at first. Let's say a negative ebonite rod is brought close but not touching the sphere. (The entire electroscope is neutral). The electrons in the electroscope will want to repell the electrons in the rod so the electrons in the electroscope move down into the 2 leaves and then repell because there is a high concentration of negatives. When the ebonite rod is removed, the leaves go back to their straight position. The electroscope is always neutral but only a charge distibution occured. The number of protons and electrons remain the same. However if a charged rod touches the sphere then the electroscope will be charged because it a conductor and the charge from the rod transfers to the electroscope because the rod's caharges want to attarct to the electroscope's opposite charges. This is called charging by contact.
Wiki User
∙ 16y ago
Wiki User
∙ 14y agoAn electroscope is an early scientific instrument that is used to detect the presence and magnitude of electric charge on a body. It can detect both positive and negative types of charge, but often not distinguish between the two; if the object is charged, the pith ball will be attracted to it. The attraction occurs because of induced polarization of the atoms inside the pith ball. The pith is a nonconductor, so the electrons are not free to leave their atoms and move about in the ball, but they can move a little within the atoms. If, for example, a positively charged object is brought near the ball, the negative electrons in each atom will be attracted and move slightly toward the side of the atom nearer the object. The positively charged nuclei will move slightly away. Since the negative charges are now nearer the object than the positive charges, their attraction is greater than the repulsion of the positive charges, resulting in a net attractive force. This separation of charge is microscopic, but since there are so many atoms, the tiny forces add up to a large enough force to move a light pith ball.
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What can an electroscope determine?
An electroscope would detect an electrical charge.
What is an electroscope and how does it detect charge?
by puting them together
What is the instrument that is used to detect static charge?
An electroscope is an instrument used to detect static electricity.
An instument that can detect the presence of an electric charge is a?
an electroscope
What is a eletroscope?
An electroscope is an early scientific instrument. It is used to detect and measure electricity or an electric charge on a body.
What can an electroscope determine?
An electroscope would detect an electrical charge.
What is an electroscope and how does it detect charge?
by puting them together
What is the instrument that is used to detect static charge?
An electroscope is an instrument used to detect static electricity.
An instument that can detect the presence of an electric charge is a?
an electroscope
What type of instrument can detect the presence of an electrical charge?
a gold leaf electroscope. if initially charged negatively, the deflection of the leaf with respect to the electroscope is increased if a negatively charged object approaches the electroscope. conversely if a positively charged object approaches, the deflection is reduced. the angle of deflection is proportional to the magnitude of the charge.
What is a eletroscope?
An electroscope is an early scientific instrument. It is used to detect and measure electricity or an electric charge on a body.
What is the use of gold leaf electroscope?
to determine if there is a charge on an object/ body or not and what kind of charge as well.
Principle of electroscope and types of electroscope?
Like charges repel and unlike charges attract each other this is the fundamental principle used in an electroscope to detect presence and amount of charge. There are mainly 2 tpes of electroscopes pith ball electroscope and gold leaf electroscope
What kind of charge is induced on a metal-leaf electroscope by an ebonite rod?
Static
What does an electroscopic measure?
An electroscope is an early scientific instrument that is used to detect the presence and magnitude of electric charge on a body. It was the first electrical measuring instrument. The first electroscope, a pivoted needle called the versorium, was invented by British physician William Gilbert around 1600.[1] The pith-ball electroscope and the gold-leaf electroscope are two classical types of electroscope that are still used in physics education to demonstrate the principles of electrostatics. A type of electroscope is also used in the quartz fiber radiation dosimeter.Electroscopes detect electric charge by the motion of a test object due to the Coulomb electrostatic force. The electric potential or voltage of an object equals its charge divided by its capacitance, so electroscopes can be regarded as crude voltmeters. The accumulation of enough charge to detect with an electroscope requires hundreds or thousands of volts, so electroscopes are only used with high voltage sources such as static electricity and electrostatic machines. Electroscopes generally give only a rough, qualitative indication of the magnitude of the charge; an instrument that measures charge quantitatively is called an electrometer.Source : Wikipedia
How can gold leaf electroscope be used to detect an electric charge?
In order to identify the charge of a body we should use a charged electroscope. Let us say the electroscope is negatively charged. Now bring the unknown charged body 'X' near the cap of the electroscope. If the leaves diverge more the charge in 'X' must be negative. Suppose that the leaves close a little when 'X' is brought near 'C', then 'X' may have a positive charge or it may not have any charge. In order to confirm the positive charge you must bring the rod 'X' near the cap of a positively charged electroscope. If the leaves diverge more, then 'X' has positive charge.
How does an electroscope work to detect static electricity?
Electroscopes detect electric charge by the motion of a test object due to the Coulomb electrostatic force. The electric potential or voltage of an object equals its charge divided by its capacitance, so electroscopes can be regarded as crude voltmeters. The accumulation of enough charge to detect with an electroscope requires hundreds or thousands of volts, so electroscopes are only used with high voltage sources such as static electricity and electrostatic machines.
