1. As an object acquires a positive charge, its mass usually

(a) Decreases.

(b) Increases.

(c) Stays the same.

(d) Becomes negative.

2. Refer to Fig. 16-32d. If the two charged plates were moved until they are half the distance shown without changing the charge on the plates, the electric field near the center of the plates would

(a) Remain almost exactly the same.

(b) Increase by a factor of 2.

(c) Increase, but not by a factor of 2.

(d) Decrease by a factor of 2.

(e) Decrease, but not by a factor of 2.

Figure 16-32d

+Q (d)