CHARGING BY INDUCTION: Conductor A (positively charged) is brought nearby to con
ID: 2288980 • Letter: C
Question
CHARGING BY INDUCTION:
Conductor A (positively charged) is brought nearby to conductor B (initially uncharged). We will use object A to charge object B by induction.
In order to successfully charge object B, all of the following must be done:
a.) Which object needs to be connected to ground (at some time in the process) in order for this to work? ---Select--- A only, B only, both A & B, neither A nor B ,Not enough info. .
b.) During this connection, electrons will flow: ---Select--- from A into the ground. from the ground into A. from B into the ground. from the ground into B. from A onto B. from B onto A. Not enough info. .
c.) When should B be disconnected to the ground? ---Select--- before A is taken away. after A is taken away. B will be charged the same way regardless. B does not need to be connected to ground at all. Not enough info.
d.) If A is brought closer to B during this process (rather than further away), then the amount of charge that can be generated on B is ---Select--- larger, smaller, the same, Not enough info.
e.) More generally, when charging an object by induction, the initially uncharged object will always end up ---Select--- negatively charged. positively charged. with the opposite charge as the object used to charge it. with the same charge as the object used to charge it. there is no general statement that can be made about this.
POTENTIAL MISHAPS:
f.) If, during an otherwise correct procedure, A were accidentally touched to B while B is connected to the ground, then:
the net charge on A would end up ---Select--- positive negative zero Not enough info.
the net charge on B would end up ---Select--- positive negative zero Not enough info.
(Can you see why our attempt to charge B has failed?)
g.) If, during an otherwise correct procedure, B was disconnected from ground only after A was taken far away, then:
the net charge on A would end up ---Select--- positive negative zero Not enough info.
the net charge on B would end up ---Select--- positive negative zero Not enough info.
Explanation / Answer
a) B only
b) from the ground into B
c) before A is taken away
d) larger
e) with the opposite charge as the object used to charge it
f) the net charge on A would end up zero
the net charge on B would end up zero
g) the net charge on A would end up positive
the net charge on B would end up zero