Table of Contents
How can charging takes place by rubbing?
Charging takes place when the substances are rubbed because, during rubbing, the electrons migrate from one material to another. As a result of this migration of electrons, the material that captures them becomes negatively charged, while another material simultaneously becomes positively charged causing charging.
Why does plastic get charged up when you rub it?
When you rub plastic, you transfer electrons from one material to the other. They are then stored in one material (making it negative) while their absence makes the other material positive. Because plastic is an insulator, the electrons cannot flow through it so they effectively get stuck there – they are static.
Can be charged by rubbing?
While you can charge a dielectric (non conductive, like plastic) object rubbing, you cannot charge a conductor (like a metal) rubbing. The reason is that in a metal the charges are free to move inside the material.
What type of charges are transferred on rubbing?
The rubbing of certain materials against one another can transfer negative charges, or electrons. For example, if you rub your shoe on the carpet, your body collects extra electrons.
Which of the following gets charged on rubbing?
Explanation: Ebonite gets charged by rubbing on fur. Plastic also gets charged on rubbing by fur. and Amber also gets charged by rubbing on fur.
Which objects can be charged by rubbing?
Charging by rubbing
| Objects rubbed | Materials used for rubbing | Charged /not charged |
|---|---|---|
| Refill | Polythene, woollen cloth | Charged |
| Balloon | Polythene, woollen cloth | Charged |
| Eraser | Wool | Charged |
| Steel spoon | Polythene, woollen cloth | not charged |
What is the role of the rubbing process?
The rubbing of certain materials against one another can transfer negative charges, or electrons. For example, if you rub your shoe on the carpet, your body collects extra electrons. The electrons cling to your body until they can be released.
What happens when an object is charged by rubbing?
Charging by rubbing 1 The object that loses electrons becomes positively charged. 2 The other that gains electrons becomes negatively charged. 3 The force is simply the attraction between charges of opposite sign.
Which is an example of charging by rubbing?
Examples: When a piece of amber, plastic, polythene, or hard rubber is rubbed with fur, electrons are transferred from fur to the other material. Combing hair charges the comb in the same way. Rubbing glass (perspex) with silk causes the glass to acquire a net positive charge.
Which is charge acquired by rubbing a glass rod with silk?
The electric charge acquired by a glass rod (rubbed with silk) is positive charge whereas the silk cloth gets a negative charge. 2) When we rub a ballpoint pen refill with a piece of polythene, then both, the refill as well as polythene get charged. The point pen refill acquires a positive charge whereas polythene gets the negative charge.
How is a silk comb charged by friction?
The glass rod is positively charged and the silk fabric is negatively charged as it absorbs additional electrons from the glass rod. In this case, bar after rubbing, comb after running through dry hair becomes electrified and this is an example of frictional electricity.