Since like charges repel, the pith balls repel one another. If an ebonite rod is rubbed with fur, the rod rubs some electrons off the fur. The rod thus becomes negatively charged and attracts the positively-charged pith balls.
Why is the pith ball attracted to the rod?
Even though the pith ball remains as a neutral object, there is now a net positive charge on the side of the ball closest to the rod and a negative charge on the side farthest from the rod . This causes the pith ball to be attracted to the rod.
Why does the charged rod initially attract the uncharged pith ball?
Explanation: The pith ball is neutral and as the negatively charged rod is brought close, the molecules within the ball are reoriented so their electrons will move away from the negatively charged rod (the electrons crowd the far side of the pith ball. ... This causes the pith ball to be attracted to the rod.
How is the pith ball charged when it is repelled by the glass rod?
– Use glass rods rubbed down with a piece of silk. (Glass rods will lose electrons in the process.) When gently sliding glass rod over the pith ball, electrons from the pith ball will transferred to the positively charged glass rod and pith ball will gain a net positive charge .
When the negatively charged rod is brought near the pith ball what happens to the charges in the pith ball?
When a charged rod is brought close to the pith balls, their charges polarize . If they come in contact with the charged rod, they can inherit the same sign charge. Since like charges repel. when similarly charged, the pith balls behave like siblings and refuse to touch each other.
What happens when a positive rod touches a neutral pith ball?
Touch a charged positive rod to a neutral pith ball. The pith ball is attracted to the rod (just like the neutral bits of paper). The pith ball sticks to the rod momentarily, and then repels away from the rod. ... When the pith ball becomes charged, the pith ball and rod repel each other.
What happens if a glass rod is rubbed with silk?
A glass rod becomes positively charged when rubbed with silk, while the silk becomes negatively charged. (a) The glass rod is attracted to the silk because their charges are opposite.
Can a charged body attract an uncharged body?
Yes , a charged body attracts an uncharged body as the oppositely charged bodies attract each other.
Is there any effect on the pith ball what does this tell you about the charge at the tip of acrylic rod?
The charged rod is brought close to the pith ball without touching it. It is observed that the charged rod weakly attracts the pith ball . This may be surprising – and you are right to be surprised, for the pith ball carries no charge.
How do you neutralize a pith ball?
The electrons from the fur or wool will be accumulating on the rod when it is rubbed by the cloth, leaving the rod with a negative charge. Touch the pith ball with your hand to neutralize it. Rub the ebonite rod with the fur or wool and bring it close to the pith ball WITHOUT touching it.
What happens when a positive charge touches a negative charge?
These positive and negative charges attract the two closer and if they touch each other, positive charges get nullified and both bodies become negatively charged . Once both are negatively charged, they tend to repel each other.
What happens when you rub a plastic rod with a cloth?
When a polythene rod is rubbed with a duster, the friction causes electrons to gain energy . Electrons gain enough energy to leave the atom and ‘rub off’ onto the polythene rod. The polythene rod has gained electrons, giving it a negative charge. The duster has lost electrons, giving it a positive charge.
What happens when a rod with a net negative 4 charge comes in contact with a neutral ball?
During charging by conduction, both objects acquire the same type of charge. If a negative object is used to charge a neutral object, then both objects become charged negatively. In order for the neutral sphere to become negative, it must gain electrons from the negatively charged rod .
What will happen when a neutral rod is brought near a negatively charged rod?
When a negatively charged object is brought near the knob of a neutral electroscope, the negative charge repels the electrons in the knob, and those electrons move down the stem into the leaves . Excess electrons flow from the rod into the ball, and then downwards making both leaves negatively charged.
What happens when two negative charges come together?
Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another , while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges. The size of the force varies inversely as the square of the distance between the two charges.
What will happen if a charged object is brought close to a neutral object?
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 . ... The flow of electrons results in a permanent charge being left upon the object.
