Describe how you would charge a conductor negative using contact method
To charge a conductor negatively using the contact method, follow these steps:
1. Obtain a conductor: You will need a conductor, such as a metal rod, wire, or plate, that is not already charged.
2. Obtain a suitable charged object: Look for an object that is already negatively charged, such as an object that has been rubbed with a material that attracts electrons, like a rubber balloon rubbed on hair.
3. Make contact: Hold the charged object in your hand and touch it to the conductor. Ensure that the charged object makes direct contact with the conductor.
4. Transfer of charges: When the charged object comes into contact with the conductor, some of the excess negative charges from the charged object will transfer to the conductor. Electrons will move from the negatively charged object to the conductor.
5. Verify the charge: After the contact, you can measure the charge on the conductor by using an instrument like an electroscope. If the electroscope shows that the conductor now has an excess of negative charges, it has been charged negatively.
Note: It's important to take precautions when dealing with electric charges and ensure that you are safe and using appropriate tools.