Take Test: BB-1_ Chapter 2 QuizTest Information Description a Instructions Multiple Attempts This test allows multiple attempts. Force Completion This test can be saved and resumed later. Question Completion Status: Save and Submit 1. QUESTION 1 Current equals: x coulombs × time voltage × time 1 points QUESTION 2 1. If you need a 5.1 Ω resistor with +/- 5% tolerance, what color code should you look for? GRN-BRN-GOLD-GOLD BLU-BRN-BL-GOLD GRN-BRN-BLK-GOLD GRN-BLK-GOLD-GOLD 1 points 1. QUESTION 3 The typical resistor to use for higher power applications would be the: carbon-composition carbon film wire wound metal oxide metal film 1 points QUESTION 4 voltage coulomb current joules 1 points QUESTION 6 1. The switch shown is a: SPDT .5 seconds. QUESTION 7 The force that causes conductor electrons to move is: current voltage resistance conductance 1 points QUESTION 8 1.1. How many amperes of current are flowing? 15 A 5A 20 A 10 A 1 points 1. Five coulombs of charge flow past a point in 0. The adjustable contact of a 1 k linear potentiometer is set at 3/4 of full rotation from the lower-end terminal. What is the resistance between the adjustable contact and the upper-end terminal? 1 kΩ 500 Ω 250 Ω 750 Ω 1 points 1. QUESTION 5 The capacity of a battery cell is measured by the amount of ________ that can be supplied over time. Are often called semiconductor switches. QUESTION 11 Which of the following is NOT a voltage source? battery solar cell semiconductor generator 1 points QUESTION 12 1.DPST SPST DPDT 1 points QUESTION 9 1. The movement of electrons between two points is called voltage. The materials with the fewest free electrons are classified as: insulators semiconductors silly putty conductors 1 points 1. True False 1 points QUESTION 10 1. QUESTION 13 Transistors used as switches Can be controlled by voltage. The opposition to current is called: conductance ohms insulators resistance 1 points 1. . Ground is the reference point in electric circuits and has a potential of ________ with respect to other points in the circuit. all of the above none of the above 1 points QUESTION 14 1. an electron 0 volts source voltage none of the above 1 points 1.12 coulombs 1 points 1. QUESTION 15 A conductor has 3. QUESTION 16 The rate of flow of free electrons in a conductive material is called: coulomb ampere voltage current 1 points QUESTION 17 1.Can open and close a circuit path.4 coulombs 3.12 x 1020 electrons pass through it. Voltage can be produced by means of: chemical energy magnetic energy combined with mechanical motion light energy all of the above 1 points QUESTION 18 . How much charge is this? 50 coulombs 20 coulombs 62. True False 1 points QUESTION 22 1. black. ________ would NOT increase the resistance of the wire. True False 1 points QUESTION 19 1. What is the resistance value and tolerance with color bands of gray.1. and gold? . red. The outermost shell of an atom is called the valence shell. A lower AWG size wire Use in a hotter environment Winding pattern A smaller diameter wire 1 points 1. QUESTION 20 A voltage source contains which of the following? electromotive force potential energy potential difference all of the above 1 points QUESTION 21 1. Valence electrons are tightly bound in insulators. True False 1 points QUESTION 23 1. In the neutral state all atoms contain the same number of protons and electrons. QUESTION 24 Electrical current is defined as the movement of which subatomic particles? molecules electrons protons neutrons 1 points QUESTION 25 1. QUESTION 26 A resistor coded with Red-Violet-Black-Gold bands respectively.27 Ω +/.5% 1 points QUESTION 27 1.5% 270 Ω +/. A rheostat is a: variable resistor 3-terminal device voltage-control device all of the above 1 points 1. ± 10% 1 points 1.5% 2. The smallest particle of an element that still retains the characteristics of the element is called an atom. True False 1 points . ± 10% 82 ohms. ± 5% 82 ohms. would be of what value and tolerance? 27 Ω +/.820 ohms. ± 5% 820 ohms.7 Ω +/.5% 0. A potentiometer can be used as a rheostat. True False 1 points QUESTION 31 1. True False 1 points 1. each with an opposite charge. A potentiometer is a three terminal device. QUESTION 32 Electrons are negatively charged particles. Which statement is NOT true? A rheostat is a two terminal device. and are contained in the nucleus of the atom. 1 points 1. QUESTION 29 How is a negative ion produced? the atom gains an electron in the nucleus the atom gains an electron in the valence shell the atom loses an electron from the valence shell the atom gains a proton in the nucleus 1 points QUESTION 30 1. True False 1 points QUESTION 33 . A rheostat can be used as a potentiometer. The nucleus contains protons and electrons. QUESTION 28 Current value depends on the amount of charge moving past a point in a unit of time.1. Resistance of the human body averages between: 10K ohms and 50K ohms zero ohms and 100K ohms 50K ohms and 100K ohms 90K ohms and 100K ohms 1 points 1. QUESTION 34 The unit of electrical charge is measured in: positive or negative charges Coulombs free electrons amperes 1 points QUESTION 35 1. The negative and positive charge symbols are assigned (in that order) to the: electron and proton proton and electron atom and nucleus electron and element 1 points 1.1. QUESTION 36 The best conductor in the following list is: Germanium Silver Silicon Copper .