Draw and explain how would you charge a conductor negative using contact method
To charge a conductor negatively using the contact method, follow these steps:
Step 1: Choose a negatively charged object:
Start with a negatively charged object such as a negatively charged rod or balloon (which is typically charged by rubbing it with a material like wool or fur).
Step 2: Bring the negatively charged object near the conductor:
Hold the negatively charged object close to the conductor, ensuring that they are not in direct contact. This will allow for the transfer of electrons between the two objects.
Step 3: Electrons transfer from the object to the conductor:
Due to the forces of electrostatic attraction, some of the negatively charged electrons from the object will be attracted to the conductor, which initially is neutral.
Step 4: Electrons distribute themselves on the conductor:
As the negatively charged electrons transfer to the conductor, they distribute themselves along the surface of the conductor. The electrons repel each other and will try to move as far apart as possible.
Step 5: Transfer more electrons if desired:
If you want to charge the conductor more negatively, you can repeat steps 2-4. By repeating the contact method with the negatively charged object, additional electrons can be transferred to the conductor, increasing its negative charge.
Step 6: Measure charge with an electroscope:
After charging the conductor, you can use an instrument called an electroscope to measure the presence and nature of charge. If the leaves of the electroscope repel each other, it indicates that the conductor is negatively charged.
Note: It is important to remember that the charging process occurs due to the transfer of electrons, and the object providing the electrons becomes positively charged in response. Also, make sure to exercise caution while performing experiments involving electrostatic charges to avoid electric shocks.