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13. Conductors are materials that a).allows heat to pass through b). allow cold to pass through c).stop heat to pass trough d).stop cold from passing through
14. Insulators prevent from traveling from atom to atom. a). electrons b). electricity c). conductors d). circuits
15. Which of the following is an example of an insulator? a wooden black b) nail c) penny d) paperclip
16. Why are electric wires coated in a plastic or rubber? a) To keep you getting electrocuted b) It is cheaper c).for decoration d) to prevent you from freezing
17. Any material that does not electric current to pass through it. a) resistor b) insulator c) conductor d) electrons
18. A material or device that allows some current to pass but converts some of the current to another form of energy. a) resistor b) insulator c) conductor d) electrons
19. What will happen if two resistance are connected in parallel? a). The current through each must be the same b). Their combined resistance equals the same of the individual values c). Each must have the same resistance value d). The voltage across each must be the same
20. What do you call this type of resistor presented below? a. Film Resistor b. Fixed Resistor c. Variable Resistor d. Wire Wound Resistor
21. In what type of circuit is the total resistance smaller than the smallest resistance? a) Serial circuits of resistors c. Serial circuits of inductors b) Parallel circuits of resistors d. Parallel circuits of diodes
22. What will happen if two resistance are connected in parallel? a). The current through each must be the same b). Their combined resistance equals the same of the individual values c). Each must have the same resistance value d). The voltage across each must be the same
23. What is the direction of the current flow (electron flow) in a closed DC circuit? a. from the more positive to the more negative potential b. from the more negative to the more positive potential c. It depends on the components in the circuit d. none of the above uniculated conductor touches the metal part of an appliances w
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