hi rest_7, welcome to PF.reset_7 said:When you rub a rubber rod with fur it becomes negatively charged. How does it keep it's charge if it's in your hand?
rl.bhat said:hi rest_7, welcome to PF.
Unlike the metal rod, rubber is an insulator, in which charges are localized. They won't conduct through it to your hand to conduct to the ground. Due to this same reason you cannot charge the metal rod by holding it in your hand.
rl.bhat said:When you bring a negatively charged rubber rod near an uncharged pith ball, electrons on the pith ball are repelled back due to the repulsive force leaving the surface near the rod positively charged. When you touch the pith ball with the rod, electrons are transferred from the rod to the pith ball.
willem2 said:The charges can only go from the surface of the rod, directly to anonther object that's touching the surface. If you swiped the entire surface of the rod with your hands, you could discharge it as well.
A charged rod is an object that has an excess of either positively or negatively charged particles, known as ions. This excess charge creates an electric field around the rod.
A charged rod stays charged due to the conservation of charge. This means that the total amount of charge in a closed system remains constant. Therefore, the charged particles on the rod will not disappear unless they are transferred to another object.
When you touch a charged rod, the excess charged particles on the rod will transfer to your body, creating a temporary imbalance of charge. This is known as static electricity and can cause a shock if the charge is strong enough.
A charged rod can lose its charge if it comes into contact with a conductor, such as metal. The excess charged particles will transfer to the conductor, equalizing the charge between the rod and the conductor. Additionally, environmental factors, such as humidity, can also affect the charge on a rod.
Yes, a charged rod can be discharged completely by touching it to a grounded object, such as the Earth. This allows the excess charged particles to flow into the Earth, equalizing the charge on the rod and discharging it completely.