A closed surface S is constructed around a conducting wire connected t

1.	A closed surface S is constructed around a conducting wire connected to a battery and a switch (figure 30-Q6). As the switch is closed, the free electrons in the wire start moving along the wire. In any time interval, the number of electrons entering the closed surface S is equal to the number of electrons leaving it. On closing the switch, the flux of the electric field through the closed surface(a) is increased (b) is decreased(c) remains unchanged (d) remains zero.
Answer» The correct answer is (c) (d) (c) remains unchanged (d) remains zero.

A closed surface S is constructed around a conducting wire connected to a battery and a switch (figure 30-Q6). As the switch is closed, the free electrons in the wire start moving along the wire. In any time interval, the number of electrons entering the closed surface S is equal to the number of electrons leaving it. On closing the switch, the flux of the electric field through the closed surface(a) is increased (b) is decreased(c) remains unchanged (d) remains zero.

Answer»

The correct answer is (c) (d)

(d) remains zero.