Charge the electroscope negatively by touching the ball with the negatively char
ID: 1836412 • Letter: C
Question
Charge the electroscope negatively by touching the ball with the negatively charged rod. Find out and explain how you can increase the amount of charge left on the electroscope. How can you tell that more charge has been left. Now (with the electroscope charged negatively) bring the negative rod dose to but not touching, the ball, Do the same with the positive wool. In each case record and explain clearly (with diagrams like Fig.2) what happens With the electroscope negatively charged can you tell the sign of the charge which is dose Vo the ball? If so. how? The electroscope can be charged positively by using a negatively charged teflon rod, as follows: Neutralize the electroscope Then, holding the teflon rod In one hand, bring it close to (but not touching) the ball. Negative charges on the ball/stemleaf structure will try to move as far as possible from the rod, Now, keeping the rod in place, touch the ball with a finger of your other hand This allows some negative charge to escape from ball/stemleaf. Then remove first your finger and then the teflon rod Explain clearly, with several pictures. (at least 4...) describing each step, why this process of 'charging by induction" leaves the electroscope positively charged.Explanation / Answer
as the teflon is brought near the ball the negative charges are repelled by the negative charge of teflon rod and it accumulates in the far end of the ball. Now if we tap the ball with finger we are connecting the ball to the ground thus negative charges are swept away from the ball through our fingers and thus the ball is positively charged.
when negatively charged rod is touched with the ball the electroscope is negatively charged now we can increase the negative charge by either touching the ball with negative charge rod or bringing a positive charge rod near the ball and then grounding the leaf terminal and then removing the rod.When more charge is left the gold leaves diverge from each other as they repelled with more force due to more charge accumulation.
if a negative charge is brought near the ball the negative charges already present the negative charges are repelled and they accumulate at the leaf thus creating the leaves to diverge more. If a positive wool is brought near the ball the negative charges accumulate near the wool. Thus the concerntration of negative charges at the leaf decreases and the leaves come closer to each other.
If we bring negative charge near the ball the leaves diverge more than the initial position. While if we bring positive charge near the ball then the leaves will come closer to each other than the initial position.
as the teflon is brought near the ball the negative charges are repelled by the negative charge of teflon rod and it accumulates in the far end of the ball. Now if we tap the ball with finger we are connecting the ball to the ground thus negative charges are swept away from the ball through our fingers and thus the ball is positively charged.