Question

1.

Two charges are placed on the x axis. One of the charges (q1 = +6.70C) is at x1 = +3.00 cm and the other (q2 = -28.9C) is at x2 = +9.00 cm. Find the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b) x = +6.00 cm.

(a) Number Units (b) Number Units

2.

Check Your Understanding: Question 18.17

Drawings A and B show two examples of electric field lines. Which (one or more) of the following statements are true?

In both A and B the electric field is the same everywhere.

As you move from left to right in each case, the electric field becomes stronger.

The electric field in A is the same everywhere, but it becomes stronger in B as you move from left to right.

The electric fields in both A and B could be created by negative charges located somewhere on the left and positive charges somewhere on the right.

Both A and B arise from a single positive point charge located somewhere on the left.

Answer 1