Answer to Question #311280 in Physics for haasggdfnsd

Question

When a slab of insulating material is placed between the plates of a charged capacitor, the electric field becomes A. less B. similar C. greater D. depends on the situation 21. A capacitor has a charge of 0..02 C when connected with a 0 V battery. The capacitance is A. 1 µF B. 4 µF C. 2 µF D. 40 µF 22. A 50 µF has a potential difference of 8 V. What is its charge? A. 4 x 10-3 C B. 6.25 x 10-5 C C. 4 x 10-4 C D. 6.25 x 10-6 C 23. A parallel plate capacitor has an energy of 2.5 J. It must be placed in a potential difference of A. 150 V B. 350 V C. 500 V D. 0.25 MV

Answer 1

20. Answer: A. less

21. Answer: NA

22. Answer: C. 4 x 10-4 C

23. Answer: NA