71) An air-filled capacitor is charged, and then a dielectric is inserted. As a

Question

71) An air-filled capacitor is charged, and then a dielectric is inserted. As a result, there is an induced charge on the dielectric. What is the difference between induced charge and free charge? A) There is no difference. B) Induced charge does not result in a net charge on the dielectric. C) Induced charge Is smaller than free charge. D) Free charge creates an electric field, but induced charge does not. E) Free charge creates an electric potential, but induced charge does not. 72) An electric dipole consists of two equal and opposite charged particles of mass 1.2 g and charge 3.7 mu C separated by 1.7 mm. What is the escape speed of the positive charge - that is, how much speed would you have to give it so it would escape the other charge? A) 200 m/s B) 350 m/s C) 6600 m/s D)7.1 x 10^4 m/s E) 2.0 x 10^5 m/s

Explanation / Answer

true answer is 71)B 72)D

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