0
Why leaves of charged electroscope collapse if we touch its disk with metal rod?
Wiki User
∙ 6y ago
The metal rod is a good conductor. Hence when we touch it will a charged electroscope,the repeling charges will flo through it and our body and reach th ground.so the charge disappears and the leaves collapse
Wiki User
∙ 6y ago
Parveen Javed
If we touch its disk with a metal rod we allow a charge to spread across much larger on metal rod becoming essentially zero on leaves .so the leaves collapse
Wiki User
∙ 8y agoIf you touch it with a metal rod, it will discharge - the charges, that were repelling one another, will go somewhere else.
Add your answer:
Earn +20 pts
Why do the leaves of an electroscope spead apart when a charged object touches the metal knob?
The charged object charges both leaves of the electroscope with like charges and like charges repel.
Can the leaves of a metal leaf electroscope be attracted to each other?
No. There is only one connection for the leaves. They are either charged (spread apart) or not charged (not spread apart).
How come the leaves on a metal leaf electroscope repel?
An electroscope detects the static electrical charge on an object. If an object with a electrical charge is touched to the knob on top this charge is transferred to the rod and in turn to the metal leaves in the jar. Opposite charged objects attract and same charged objects repel. The charge on both leaves is the same polarity so they repel each other.
Why must a sphere rod and leaves of an electroscope be a conductor?
When a negatively charged rod touches the sphere of the electroscope, negative sharge spreads throughout the metal. Since the leaves are both negatively charged, the free ends repel and move away from each other. When a positvely rod touchs the sphere, negative charges move toward the sphere, causing the leaves to be positively charged. hope this helps :)
What happens when a charged electroscope is connected to an uncharged electroscope by a metal wire?
Charge would flow from the charged electroscope to the initially uncharged one, until the charges are equal on both. At that point, the potential on both ends of the wire would be equal, there would be no voltage across the wire, and no more current would flow. Both electroscopes would then be charged, with charge of the same sign, and with half as much charge as the initially-charged one had.
Why do the leaves of an electroscope spead apart when a charged object touches the metal knob?
The charged object charges both leaves of the electroscope with like charges and like charges repel.
Can the leaves of a metal leaf electroscope be attracted to each other?
No. There is only one connection for the leaves. They are either charged (spread apart) or not charged (not spread apart).
Why do the leaves of an electroscope repel each other when a charged object touches a metal knob?
Because when the charged object is say, negatively charged, the electrons in the electroscope want to get as far away as possible from the negative object because "like" charges REPEL. so when the electrons in the electroscope move to the leaves , they now are both negative and "like" charges so now the leaves want to get away from each other as well and that's why they separate.
How come the leaves on a metal leaf electroscope repel?
An electroscope detects the static electrical charge on an object. If an object with a electrical charge is touched to the knob on top this charge is transferred to the rod and in turn to the metal leaves in the jar. Opposite charged objects attract and same charged objects repel. The charge on both leaves is the same polarity so they repel each other.
Why must a sphere rod and leaves of an electroscope be a conductor?
When a negatively charged rod touches the sphere of the electroscope, negative sharge spreads throughout the metal. Since the leaves are both negatively charged, the free ends repel and move away from each other. When a positvely rod touchs the sphere, negative charges move toward the sphere, causing the leaves to be positively charged. hope this helps :)
What happens when a charged electroscope is connected to an uncharged electroscope by a metal wire?
Charge would flow from the charged electroscope to the initially uncharged one, until the charges are equal on both. At that point, the potential on both ends of the wire would be equal, there would be no voltage across the wire, and no more current would flow. Both electroscopes would then be charged, with charge of the same sign, and with half as much charge as the initially-charged one had.
How do you use the gold leaf electroscope?
Touch an object to the metal receiver at the top of the electroscope. If the object is charged, it will transfer its charge to the electroscope. The receiver is connected to the gold leaf, so the electric charge from the object will spread throughout the metallic parts of the electroscope, including the suspended gold leaf. The two halves of the leaf then have the same type of charge on them. Since like charges repel, the leaves levitate away from each other at an angle dependent upon how much charge they hold.
Why is it important to touch a charged object to the metal rod of an electroscope and not to the rubber stopper?
it is important because if you don't and touch the rubber stopper it will not show if it is positive.
What is gold leaf electroscope?
INVENTOR OF THE GOLD-LEAF ELECTROSCOPE:-Englishmen Sir Abraham Bennet (1786 Anno Domini)PRINCIPLE OF A GOLD-LEAF ELECTROSCOPE:-A gold-leaf electroscope is a simple device which is used to identify the electric charge present in a body.CONSTRUCTION OF A GOLD-LEAF ELECTROSCOPE:-1) A gold-leaf electroscope is a metallic disk attached to one end of a copper rod.2) To the other end of the copper rod, two thin gold metal leaves are attached. (Usually of gold. Can also be of another metal.)3) The side of the copper rod with the thin gold leaves is fitted inside a conical flask, through a non-conducting rubber-cork.4) The thin gold leaves are used in a electroscope to make it more sensitive.WORKING OF A GOLD-LEAF ELECTROSCOPE:-1) If an uncharged body is brought and touched on the metallic disk, we notice no change in the golden leaves.2) If a charged body (positively or negatively charged) is brought and touched to the metallic disk of the gold-leaf electroscope, it attains the same charge as that of the charged body touched to the metallic disk by the property of transmission of charges from one charged substance to another substance.3) Therefore, the golden leaves in the electroscope also attain like charges and diverge from each other due to the repulsion.4) The repulsion of the golden leaves in the electroscope is the test for finding out that whether a body is charged or not.5) If we touch any of the charged bodies, the charge escapes from our body directly to the earth through our legs.6) The charged body thus loses it's charge and becomes neutral.
What are the kind of electroscope?
metal-leaf and pith-ball
Would metal leaf electroscope experiment work if the terminal were made out of an insulator?
No it would not work because an insulator stops electrons from moving from moving to atom to atom so there is no way to get a charge to the metal leaves
How can you tell if metal leaf electroscope is neutral or positive?
you cant
