You bring a negatively charged rubber rod close to a grounded conductor without touching it. Then you disconnect the ground. What is the sign of the charge on the conductor after you remove the charged rod?

Question

You bring a negatively charged rubber rod close to a grounded conductor without touching it.  Then you disconnect the ground.  What is the sign of the charge on the conductor after you remove the charged rod?

anonymous · Answer

|dw:1327077983996:dw|

anonymous · Answer

so positve

anonymous · Answer

sweet dude...thanks a ton

anonymous · Answer

http://regentsprep.org/Regents/physics/phys03/aeleclab/induct.htm

anonymous · Answer

"Electroscope ends up oppositely charged to the object used to charge it."

anonymous · Answer

options are, negative, positive, no charge, and cannot be determined from given information

anonymous · Answer

cannot be determined from given information because we don't know initial state of conducter

anonymous · Answer

i got a question added to it cause i got one wrong...u care to do another if i make the post?

anonymous · Answer

sure, why not

jamesj · Answer

This is classic example of induction. To see others in action, watch this beginning around minute 7: http://ocw.mit.edu/courses/physics/8-02-electricity-and-magnetism-spring-2002/video-lectures/lecture-1-what-holds-our-world-together/

anonymous · Answer

This animation is good too http://www.physicsclassroom.com/mmedia/estatics/isop.gif

jamesj · Answer

Nice

jamesj · Answer

@sonofa: following up from the conversation on your other question, the answer here is the change in charge on the conductor is positive.  It has to be, because the charge induced in the conductor is positive, as per the original diagram imran drew.

anonymous · Answer

excellent

jamesj · Answer

meet me in chat for a minute