What is electroscope explain its working with diagram?
It is an instrument used to detect the presence and magnitude of the electric charge. When the top of the instrument is brought near the charged body the leaf inside the electroscope repel or attract depending on the charge of the body which is brought near it.
How does the electroscope show that it is charged?
If you bring a negative object near the electroscope, the electrons in the scope will be repelled toward the leaves, balancing the charge. The leaves will move toward each other. If you bring a positive object near the electroscope, it will attract the electrons toward the terminal.
What is the working principle of electroscope?
The working principle of an electroscope is based on the atomic structure of elements, charge induction, the internal structure of metal elements and the idea that like charges repel each other while unlike charges attract each other.
What happens in electroscope experiment?
An electroscope detects electrical charge. When you rubbed the material on your hair, your hair transferred electrons to the material, giving it a negative charge. This process is called induction, or the process of accumulating charge.
What is electroscope describe with the help of a diagram and instrument which can be used to detect a charged body?
An electroscope can be used to detect whether a body is charged or not. In an electroscope, two metal foils are hanged with the help of a conductor in the glass jar with lid. When a charged body touches this conductor then its charges get transferred to the metal foil and they separates due to like charges.
What is an electroscope explain its working class 8?
An electroscope is a simple device which is used to test the presence of charge in an object. The gold-leaf electroscope was developed in 1787 by a British scientist named Abraham Bennet. Gold and silver are the best conductors of electric current and hence leaves of these metals are used in an electroscope.
What will happen to the leaves of an electroscope if a positively?
When a positively charged object is brought near the electroscope, it causes the leaves to have a positive charge, and the leaves repel each other.
How will you use an electroscope to I detect and measure the charge on an object II find the nature of charge on an object?
Solution : The electroscope is first charged with a known charge, such as using a positively-charged glass rod or a negatively-charged ebonite rod. Then, the object with unknown charge is brought close to the electroscope.
How would you use an electroscope to determine the nature of the charge on a body class 8?
To detect the presence or absence of charge on a body, we bring the body close to the gold leaf electroscope and touch it with the cap of the device. If the body has charge, then the two leaves of the electroscope also get similarly charged.
What is a leaf electroscope explain its construction working with the help of diagram class 8?
Gold leaf electroscope has two gold leafs suspended from a metal(usually brass) stem in a vacuumed glass jar and connected to a metal cap. The glass is grounded with the help of a metal foil to make it uncharged. It can be used to: Detect charge: Body under test is touched with the metal cap.
What is an electroscope answer?
An electroscope is a device with the help of which we detect whether the body is charged or uncharged and in the charged body detects the type of charge it carries. ie whether positive or negative.
What will happen to the leaves of electroscope in a and B?
Solution : (a) Diverge (b) Will diverge further ( c ) First converge and then again may diverge. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.
Why do the leaves of a metal leaf electroscope raise when a positive object is brought near the metal sphere?
1 Expert Answer. When the positive object is brought near the top, negative charges migrate from the gold leaves to the top, since the negative charges in the gold (which is a conductor that has electrons that can move about) are attracted by the positive charge.
What happens when a positively charged rod is brought near an electroscope?
Similar to the results of a negatively charged rod, if a positively charged rod is brought near the knob of a neutral electroscope, it will attract some electrons up from the leaves onto the knob. That process causes both of the leaves to be positively charged (excess protons), and the leaves will diverge.
What will happen to the leaves of an electroscope if a positively charged body is brought near?
A charged body is brought near a positively charged gold leaf electroscope. The divergence of its leaves increases.
What is electroscope explain how it works Shaalaa?
An electroscope is a scientific instrument used to detect the presence of electric charge on a body. An electroscope is made out of conducting materials, generally metal. It works on the principle that like charges repel each other. In a simple electroscope two metal sheets are hung in contact with each other.
An electroscope is a charge-detecting device, which detects the presence of even weak electric charges and determines whether the charge is positive or negative. 2. An electroscope has to be charged to detect the charge on a body. 3. The charging of a gold-leaf electroscope can be done by two methods: conduction and induction.
How does a gold leaf electroscope work?
A gold-leaf electroscope is used for detecting electric charge present in a body and identifying its polarity. Its operation is based on the principle of electrostatic induction and like charge repulsion. In this electroscope, two thin leaves and an electrically conductive material are hung adjacent and virtually in contact with each other.
How do electroscopes separate leaves from plants?
If the charge is positive, electrons in the electroscope are attracted to the charge and move out of the leaves in the upward direction. It makes the leaves gain a temporary positive charge, and as like charges repel each other, the leaves separate.
How does an electroscope react to the presence of a charge?
So an electroscope reacts to the presence of a charge through the movement of electrons either into, or away from, the leaves. In either case the leaves separate. But the electroscope cannot tell if the charged object has a positive charge or a negative charge – it is only responding to the presence of an electrical charge.