Question 15: The diagram below shows three point charges, which make a right angle. -q d H: . d O H: Suppose that q = 18 HC and d = 0.831n1n. Note that this is the same setup as Question 11. 'What is the total electric potential energy of this congu ration? (a ~25 mi] (b ~36 mi] 0.20 MJ ) ) (c) ~21] ) ) 42.40 MJ Question 16: When a neuron is prepared to activate, the potential dif- ference moving from the outside to the inside is about 70mV. If a sodium ion (charge +0) moves from out- side the neuron to the inside, what is the change in electric potential energy? (0) 1.1 X 10-2\" J Question 17: A circuit consists of a 9.2V emf, and two resistors in par allel. One resistor has resistance 5.09, and the other has resistance 8.0 Q. What current ows out of the battery? (A) 0.71 A (b) 1.4 A (c) 3.0 A (d) 28 A (e) 120 A 11