1. A surface charge can be produced on insulators by
a. grounding
b. induction
c. polarization
d. contact
2. Unlike insulators, conductors can be charged by
a. grouding
b. induction
c. polarization
d. contact
The easy way to charge an insulator is by contact. Insulators cannot be charged by induction, but conductors can.
A
The correct answer is polarization
no u
ybcr
cb
surface charge on insulators can be produced by a process called polarization. To charge an insulator by polarization, you can follow these steps:
1. Rub the insulator with a material that has a higher affinity for electrons. This will transfer electrons from the material to the insulator, causing it to become negatively charged.
2. Alternatively, you can rub the insulator with a material that has a lower affinity for electrons. This will cause electrons to be transferred from the insulator to the material, leaving the insulator positively charged.
This process of rubbing or contact is the easiest way to produce a surface charge on an insulator.
On the other hand, conductors can be charged by several methods, including grounding, induction, polarization, and contact. Conductors, unlike insulators, allow for the free movement of electrons. Here are the different methods of charging a conductor:
1. Charging by grounding: Connect the conductor to the ground or a large conductor that is already charged. This allows excess charge to flow into or out of the conductor, equalizing the charge between the conductor and the ground.
2. Charging by induction: Bring a charged object close to the conductor without making direct contact. This induces a redistribution of charge within the conductor, resulting in a net charge on the surface.
3. Charging by polarization: Similar to how insulators are charged, rubbing or contact with a charged material can transfer charge to or from the conductor, resulting in a surface charge.
4. Charging by contact: Touching a charged object to the conductor allows the transfer of charge. This can occur when two conductors with different charges come into contact with each other.
It's important to note that while all these methods can charge a conductor, the easiest way among them is through grounding. This allows for the efficient transfer of charge and equalization of the charges between the conductor and the ground.