1. The motion of the small charge, q2, as it enters the region between two charg

Question

1. The motion of the small charge, q2, as it enters the region between two charged plates, perpendicular to an electric field, can be described as a:
a. parabolic motion towards the positive plate
b. circular motion towards the positive plate
c. parabolic motion towards the negative plate
d. circular motion towards the negative plate

Two small conducting spheres, A and B, with charges of -4.00 nC and +2.00 nC'
, are placed 4.00 cm apart on a horizontal plane.

1. Based on the above information, the electrostatic force between the two charges is:
a. 89.9 N
b. 4.50 x 10-5 N
c.2.02x10-6N
d. 4.50 x 10-e N

3. Refer to the above information. A third neutral conducting sphere, C, is first touched to sphere A, then to
sphere B, and then placed at a position midway between the two charges. The charges on spheres A, B, and C,
respectively, will be:
a. negative, neutral, negative
b. negative, neutral, neutral
c. positive, positive, neutral
d. neutral, negative, negative

4.Refer to the above information. When a third neutral conducting sphere, C, is first touched to sphere A, then
to sphere B, and then placed at a position midway between the two charges, charge C should:
a. remain stationary
b. be attracted to charge A, because of induction
c. be repelled by charge A, because spheres A and c are similarly charged
d. be attracted to charge A, because spheres A and C are oppositely charged

Explanation / Answer

1)c. parabolic motion towards the negative plate [q2 is +tive] 2) b. 4.50 x 10-5 N 3)b. negative, neutral, neutral 4)a. remain stationary

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