AnswersDriveTouch the electroscope and bring a charged rod close. If the charged rod is negative, electrons from the electroscope will flow onto your body. Now remove your hand and then move the charged rod away. The electroscope will be left with a deficit of electrons giving it a positive charge.
1
How does an Electroscope become positively charged?
The negatively charged balloon repels the negatively charged electrons, thus forcing them to move downwards. Being repelled by the negatively charged balloon, electrons from the electroscope exit and enter into the ground. Once more, this process is driven by the principle that like charges repel.
2
What happens when you bring a positively charged object near an Electroscope?
If the charge on the negative object is very large compared to the positive charge on the electroscope, as you bring the negative object closer you should see the leaves initially drop to each other, then rise again as the leaves become negatively charged due to so many electrons being repelled from the top terminal of
3
What happens to the electric force if you double the distance between two charged objects?
The size of the force varies inversely as the square of the distance between the two charges. Therefore, if the distance between the two charges is doubled, the attraction or repulsion becomes weaker, decreasing to one-fourth of the original value.
4
Why do static charges move?
Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged. The rubbing of certain materials against one another can transfer negative charges, or electrons.
5
Is the Electroscope charged positive or negative?
Suppose now rod A is positive, If you bring Rod A to the positively charged electroscope, the electrons on the leaves of the electroscope will be attracted by the positively charged rod and thus will go to the knob. So the leaves will repel more. Suppose rod B is negative.
6
How can an object be positively charged?
Positive and negative charges. Objects can be positively charged, negatively charged or neutral (no charge). A substance that gains electrons becomes negatively charged, while a substance that loses electrons becomes positively charged. Atoms or molecules that become charged are ions.
7
What causes the charges to move in a circuit?
The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.
8
What is the difference between charging by conduction and induction?
Each of these examples involves contact between a charged object and a neutral object. In contrast to induction, where the charged object is brought near but never contacted to the object being charged, conduction charging involves making the physical connection of the charged object to the neutral object.
9
How does static discharge occur?
Electrostatic discharge (ESD) is the sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown. A buildup of static electricity can be caused by tribocharging or by electrostatic induction.
10
What is meant by charging by induction?
There are a variety of methods to charge an object. One method is known as induction. In the induction process, a charged object is brought near but not touched to a neutral conducting object. The presence of a charged object near a neutral conductor will force (or induce) electrons within the conductor to move.
11
How is charging by induction carried out?
If a negatively charged object is used to charge a neutral object by induction, then the neutral object will acquire a positive charge. And if a positively charged object is used to charge a neutral object by induction, then the neutral object will acquire a negative charge.
12
Can you charge an insulator?
When you rub two different insulating materials against each other they become electrically charged. This only works for insulated objects - conductors direct the charge flow to earth. When the materials are rubbed against each other: Negatively charged particles called electrons move from one material to the other.
13
What is the difference between Friction conduction and induction?
Friction – the transfer of electrons from one object to the other. Conduction – by having two objects TOUCH each other and transfer electrons from one object to the next. Induction – By inducing electrons to move from one object to the other.
14
What does it mean when the leaves of an Electroscope are spread apart?
When the metal terminal is touched with a charged object, the gold leaves spread apart in a 'V'. This is because some of the charge on the object is conducted through the terminal and metal rod to the leaves. Since they receive the same sign charge they repel each other and thus diverge.
15
What is the definition of electrostatic induction?
Electrostatic induction is a method to create or generate static electricity in a material by bringing an electrically charged object near it. This causes the electrical charges to be redistributed in the material, resulting in one side having an excess of either positive (+) or negative (−) charges.
16
What is the Coulomb's law?
Coulomb's law states that: The magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them.
17
What is the electric induction?
induction, in electricity and magnetism, common name for three distinct phenomena. Electromagnetic induction is the production of an electromotive force (emf) in a conductor as a result of a changing magnetic field about the conductor and is the most important of the three phenomena.
18
What happens when you rub two objects together?
When two different materials are rubbed together, there is a transfer of electrons from one material to the other material. This causes one object to become positively charged (the electron loser) and the other object to become negatively charged (the electron gainer).