need help understanding

Question 13 An unknown number (greater than two) of light bulbs are connected in series, and then the combination is connected across the terminals of a battery. Each connecting wire has zero resistance. The resistances of the light bulbs are also unknown, and they are not necessarily all the same. What happens to the brightnesses of the remaining light bulbs when one of the light bulbs is chosen at random, removed from the circuit, and replaced with a wire of zero resistance? They increase. They stay the same. They decrease. Some increase and others decrease depending on the resistances of the light bulbs. Some increase and others decrease depending on the number of light bulbs remaining. Question 14 0/2pts An unknown number (greater than two) of light bulbs are connected in series, and then the combination is connected across the terminals of a battery. Each connecting wire has zero resistance. The resistances of the light bulbs are also unknown, and they are not necessarily all the same. What happens to the brightnesses of the remaining light bulbs when one of the light bulbs is chosen at random, removed from the circuit, and not replaced with anything? They decrease. Some increase and others decrease depending on the number of light bulbs remaining. They increase. Some increase and others decrease depending on the resistances of the light bulbs. They stay the same. m Ouestion 15 0/ 2pts Question 15 0/2pts A circuit is constructed with one battery, four identical light bulbs (each with the same resistance), and connecting wires. Assume that the resistance of the wires is zero. All of the light bulbs are connected together, and then the combination is connected across the terminals of the battery. When is the equivalent resistance of the combination largest? when all of the light bulbs are connected in series when some of the light bulbs are connected in series and others are connected in parallel when all of the light bulbs are connected in parallel orrect Question 17 0 / 2 pts Rank the following RC series circuits according to their time constants from largest to smallest. I. R = 6.00 0, C = 10.0 mF II. R = 36.0 0, C = 10.0 nF III. R = 5.00 0, C = 10.0 HF IV. R = 9.00 Q, C = 10.0 nF V. R = 12.0 0, C = 10.0 mF O V, I, III, IV, II O II, IV, V, I, III O IV, I, III, II, V O I, II, III, V, IV