1. A metal box sits between two point charges: A + charge on the left of the box

Question

1. A metal box sits between two point charges: A + charge on the left of the box and a - charge on the right of the box. You can say that the electric potential at the two ends of the box are:

B) equal
C) different - left side is at a higher potential

2.The electric field is zero where:

A) The equipotentials are close together
B) At a turning point in the potential

C) Where the equipotentials cross the E field lines

D) Where the potential is zero

3. In moving from point A to point B, you go down in electric potential. You could have been moving:

A) the answer depends on what electric charge, if any, you have
B) perpendicular to an electric field line
C) along an electric field line (in the direction of the E field)

Explanation / Answer

1.

C) different - left side is at a higher potential

since on left side charge is positive and it creates positive electric potential

3.

C) along an electric field line (in the direction of the E field)

since direction of electric field is from high to low potential

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