In each case, a charged rod, made of the dense rubber ebonite, comes close or is in contact with the top of an electroscope. the ball on top of the electroscope is directly connected to the two metal leaves suspended in the flask. which image represents a gaining of a charge on the leaves of the electroscope by conduction in each case, a charged rod, made of the dense rubber ebonite, comes close or is in contact with the top of an electroscope. the ball on top of the electroscope is directly connected to the two metal leaves suspended in the flask. which image represents a gaining of a charge on the leaves of the electroscope by conduction? a) a b) b c) c d) d

b

Explanation

B represents a charge gained by induction. In this case, the rod is not touching the electroscope and the leaves are charged similarly because they are repelling each other. The charge is gained (induced) by the nearness of the oppositely charged rod.

on:

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.