The uniform electric field in a sphere of radius 3 m is given as E=-3a, + 5a, + 4a, V/m. Find the total potential energy stored in the said sphere. a. 25.0341 nJ b. 9.2577 pJ С. 22.1350 pJ d. 8.3447 nJ

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A snap switch with integral nonmetallic enclosure complying with NEC 300.15(E) is required to be connected to an equipment grounding conductor. A. True B. False

1. The only exception to the need for all information technology equipment to be satisfactorily grounded is where the equipment is A. DC powered.B. backup generator powered. C. double-insulated.D. isolated equipment. 2. Which section of the National Electrical Code lists sizing requirements for wire-type equipment grounding conductors? A. 250.66 B. 250.118 C. 250.4 D. 250.122 3. Which of the following statements about grounding electrical equipment is true?A. If no wire-type equipment grounding conductors are present with the branch circuits, the equipment grounding terminal bar isn't required.B. Grounding electrical equipment increases the possibility of metal parts remaining energized.C. The nonmetal parts of some electrical equipment are required to be connected to an equipment grounding conductor. D. Equipment grounding conductors can be spliced together outside of a grounded metal box. 4. Which of the following is a condition that must be met in order to qualify for the exemption…