# Short-Questions

Fast solutions for complex problems

## What happens when a glass rod is rubbed with cotton?

If you rub a glass rod with a cloth, the charge produced on the glass rod is called positive, whereas when a plastic rod is rubbed with a cloth, the charge produced on the plastic rod is negative.

Why does a glass rod when rubbed with silk cloth acquire positive charge and not?

When the glass rod is rubbed with silk clothes, glass quickly loses electrons, and silk takes electrons out of the glass rod. So glass acquires a greater order than silk as electron losses. Therefore, on rubbing, glass gets a positive charge and silk gets a negative charge.

### Is Cotton positively or negatively charged?

Since the cotton lost some electrons, it is now positively charged (since it now has more protons than electrons).

Why does a rod become negatively charged when you rub it?

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.

#### What happens when you rub a glass rod with wool?

Touching the glass to the ball causes electrons to flow from the ball to the glass, as the electrons on the ball are attracted to the positive charge of the glass. Then the glass rod is rubbed with the wool, and the wool sheds electrons onto the glass, giving it a negative charge.

What will happen when two like charges are brought together?

In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. That is, a positively charged object will exert a repulsive force upon a second positively charged object. Objects with like charge repel each other.

## What is the charge on a glass rod rubbed with silk?

positively charged
A glass rod becomes positively charged when rubbed with silk, while the silk becomes negatively charged.

When a glass rod is rubbed with silk it gains?

Solution: When a glass rod is rubbed with silk, glass rod loses electrons and silk gains electrons. Glass rod becomes positively charged and silk becomes negatively charged. For example, suppose a glass rod has 10 protons and 10 electrons and silk has 7 electrons and 7 protons.

### What are the 3 Rules of charge?

The three rules for charge interactions are: oppositely-charged objects attract each other, like-charged objects repel each other, and a neutral and a charged object attract each other.

What are the 3 methods of charging?

In order to charge an object, one has to alter the charge balance of positive and negative charges. There are three ways to do it: friction, conduction and induction.

#### How do airplanes get charged?

Precipitation static is an electrical charge on an airplane caused by flying through rain, snow, ice, or dust particles. When the aircraft charge is great enough, it discharges into the surrounding air.

How do static charges build up?

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.

## Why does a glass rod when rubbed with silk cloth?

The core has positive charge, the electrons have negative charge. When you are rubbing the glass rod with the silk cloth, electrons are stripped away from the atoms in the glass and transferred to the silk cloth. This leaves the glass rod with more positive than negative charge, so you get a net positive charge.

What happens to the charge of a glass rod when it is rubbed?

The glass gets a negative charge. When the negatively charged glass is held near the uncharged ball, electrons on the ball are repulsed and move to the opposite side of it, giving the near side of the ball a positive charge, once again causing the attraction to the glass:

### What happens if electrons are rubbed off the cloth and onto the rod?

if electrons are rubbed off the cloth and onto the rod – the cloth will be positively charged and the rod will be negatively charged if electrons are rubbed off the rod and onto the cloth – the cloth will be negatively charged and the rod will be positively charged In both cases, the opposite charges will attract. 1

What kind of Rod charges with wool cloth?

When you rub the plastic rod (polyethylene terephthalate, glycol modified, or PETG) with the wool cloth, the rod charges negative. When you rub the glass rod with the silk, the rod charges positive.