Given a plastic rod and fur, how would you charge the electroscope
If you rub a plexiglas rod with fur, the fur will gain a positive charge. If you now bring the fur close to the cap of a GLE, the leaves will open due to induced charges. If you now earth the GLE by touching the cap, electrons will flow up from earth and the leaves will close, because the GLE is at zero potential. If you now take away the fur, the leaves will open because the GLE is now negatively charged.
To charge an electroscope using a plastic rod and fur, you can follow these steps:
1. Start by ensuring the electroscope is in its neutral state, meaning it has an equal number of positive and negative charges.
2. Take the plastic rod and rub it with the fur. Rubbing creates a transfer of electrons between the rod and the fur, causing the rod to become negatively charged and the fur to become positively charged.
3. Bring the charged plastic rod near the top metal plate of the electroscope without making contact. The negative charges from the rod will repel the electrons in the metal plate, causing the electrons to move away from the top leaf and towards the bottom leaf.
4. The movement of electrons causes the leaves of the electroscope to separate, indicating a charge has been induced.
Note: The direction of charging (positive or negative) depends on the materials used. In this case, since the rod becomes negatively charged, the electroscope will acquire a negative charge.
To charge an electroscope using a plastic rod and fur, you can follow these steps:
1. Start by ensuring the electroscope is in its neutral state. This means that the leaves of the electroscope are hanging straight down without any kind of charge.
2. Rub the plastic rod with the fur. Rubbing the rod against the fur creates a transfer of electrons between the two materials. The fur will transfer some of its electrons to the rod, making the rod negatively charged.
3. Bring the charged plastic rod close to the top terminal (metal knob) of the electroscope without touching it. This will induce a separation of charges in the electroscope.
4. Due to the induction process, the electrons in the electroscope will be repelled by the negatively charged plastic rod. This will cause the electrons to migrate away from the top terminal and move down towards the leaves.
5. As the electrons accumulate in the leaves, their negative charge repels each other, causing the leaves to spread apart. This is a visual representation of the electroscope being charged.
Now, the electroscope has acquired a negative charge, meaning it has an excess of electrons. Keep in mind that if you used a positively charged rod, the process would be similar, but the charge acquired would be positive instead.