Please include explanations with each answer ty!
- elec A high-pressure arc lamp will produce a small spot of intense light with brightness comparable to sunlight. Such lamps are used in microscopes, spectrometers, movie projectors and searchlights. The gas is normally an inert gas, such as Xenon, so it will not react chemically with the electrodes. The arc is "struck" (i.e. turns on) when a high voltage pulse of 2x104 V first ionizes the gas. Once ionized, the gas has a very low resistivity. The typical voltage for a 150 W lamp is only 20 V, before the HV pulse as well as afterwards. + electrode The bulb (that contains the xenon) with its two electrodes is shown in the picture. The space between the past. electrodes is a mere 0.3 mm. The bottom electrode is connected to a positive terminal, the top to a tenmined negative terminal. X B C 14 Because the electrodes are connected to a power source, they are oppositely charged. If the distance between the electrodes were doubled, what happens to the force between the + charges on the + electrode and the - charges on the - electrode, before the current begins to flow? (A) It stays the same (B) It doubles (C) it goes up 4x (D) it becomes half of what it was (E) it becomes y of what it was. X 15 If a 450 W lamp uses the same voltage as the 150 W lamp, how do the currents compare? (A) They are the same (B) the 450 W lamp uses 1.7 times as much current (C) the 450 W lamp uses 3 times as much current (D) the 450 W lamp uses 9 times as much current. X C 16 How large is the electric field used to ionize Xenon? (A) 2 x 104 N/C (B) 0.6 x 104 N/C (C) 0.67 x 106 N/C (D) 0.67 x 108 N/C (E) 6 N/C X D 17 Which is FALSE? (A) The negative terminal is pointy because electrons more easily escape from points (B) The electric field lines point from top to bottom (C) The conventional current will flow from top to bottom (D) Half way between the electrodes there will be a horizontal equipotential (E) More than one is false D E _18 How much energy is required to move an electron from the positive to the negative terminal while the lamp is operating? (A) 0 J (B) 20 J (C) 150 J (D) 3.2 x 10-18 J (E) 1.25 x 1020 ]