Charging a Body:
There are several ways to charge a body, including:
Friction:
- When two objects rub against each other, electrons can be transferred from one object to another.
- The object that gains electrons becomes negatively charged, while the object that loses electrons becomes positively charged.
- This is known as charging by friction.
Induction:
- Induction is a method of charging without direct contact between the charging object and the charged object.
- When a charged object is brought near a neutral object, the charges in the neutral object rearrange.
- This causes one side of the object to become positively charged and the other side to become negatively charged.
Conduction:
- Conduction involves direct contact between a charged object and a neutral object.
- When the two objects come into contact, electrons can be transferred from the charged object to the neutral object.
- This results in both objects having the same charge.
All of these methods:
- All of the above methods can be used to charge a body.
- Friction, induction, and conduction are all ways in which electrons can be transferred between objects, resulting in a charged body.
Therefore, the correct answer is D: all of these methods can be used to charge a body.