No, you do not need to touch an object to permanently give it a charge. You can induce a charge on an object through methods like friction, conduction, or induction. This charge can persist on the object even after you remove your contact.
To determine the surface charge density of an object, you can divide the total charge on the object by its surface area. This will give you the amount of charge per unit area on the object's surface.
A neutral object contains equal numbers of positive and negative charges, resulting in no overall charge. This balance of charges cancels out to give the object a net charge of zero.
negative
its a conductor
A metal doorknob or light switch can give you a static shock when you touch it, especially in dry conditions. This happens when the surface has an imbalance of electric charge and discharges upon contact with your skin, causing a mild shock sensation. Using a humidifier or touching a grounded object before touching these surfaces can help reduce the likelihood of getting shocked.
To determine the surface charge density of an object, you can divide the total charge on the object by its surface area. This will give you the amount of charge per unit area on the object's surface.
A neutral object contains equal numbers of positive and negative charges, resulting in no overall charge. This balance of charges cancels out to give the object a net charge of zero.
negative
its a conductor
A metal doorknob or light switch can give you a static shock when you touch it, especially in dry conditions. This happens when the surface has an imbalance of electric charge and discharges upon contact with your skin, causing a mild shock sensation. Using a humidifier or touching a grounded object before touching these surfaces can help reduce the likelihood of getting shocked.
negative
To make something negatively charged, you can add extra electrons to the object. Electrons have a negative charge, so adding more of them to an object will give it a net negative charge.
You will get an electrostatic shock if you are electrically charged and you touch a good conductor of electricity.
A neutral object can be given a positive charge by transferring electrons away from the object, leaving a deficiency of negative charges. This can be achieved through methods such as rubbing the object with a material that readily donates electrons, causing the neutral object to become positively charged due to the imbalance of charges.
I assume that 'charge' refers to the build up of static electricity. Walk across a nylon carpet and touch someone, and a spark of static electricity will give both of you a shock.
Wood is an insulator and does not conduct electricity like metal does. When you rub your feet on the ground, you build up a charge, but when you touch a wooden doorknob, the charge cannot flow through the insulating wood to give you a shock.
An object gives up one or more protons to get a positively charged objects and absorbs one or more electrons to get a negatively charged objects. This happens when two objects are rubbed together (ex. when you rub your feet on the carpet to give some one a shock;rubbing balloon on one's hair)