Capacitor Problem 9.4.2

 

Description

The capacitance of a parallel plate capacitor can be altered by dragging (drag from the middle) a conducting block in between the two plates (charge given in mC and position given in centimeters). The light red and light blue circles represent the position of the charge on the conductor.

Question

  What is the ratio of the new capacitance to the old capacitance?  Note: There is a 1-5% intrinsic error in the calculation of charge. Start

Answer

 1.7.

Reference

See Giancoli-PA: 17-7, Giancoli-SE: 24-3.

Credits

Physlet problem authored by Mario Belloni.

2000 by Prentice-Hall, Inc. A Pearson Company