Chapter 17, Problem 17P

To determine

The diagram of the conductor in the shape of a football, and draw with dozen electric field lines and two equipotential lines.

Explanation of Solution

Introduction:

If the body is negatively charged, then the lines of force are directed towards the body. The arrows on the lines of force represent the direction of the electric field.

The following picture represents the electric field lines of a charged body with charge $-Q$ which is in the shape of a foot ball.

  

Figure (1)

The electric field lines are drawn in a way that they indicate the direction of the force due to the given field on the positive test charge. The equipotential lines are always perpendicular to the electric field lines.

Conclusion:

Thus, the required diagram is shown in figure (1).