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20. Which of the following is a disadvantage of series circuit? A. The circuit does not overheat easily. B. It is easy to control the load individually. C. Adding more loads may cause overloading in the circuit. D. If one bulb is damaged in the circuit, other bulbs will still function.
21. It is a device that maintains steady supply of voltage to your appliances at home. A. fuse B. resistor C. circuit breaker D. voltage regulator
22. Which of the following statements is NOT true about safety devices used at home? A. Safety devices are used to prevent electric shock. B. Safety devices cut the flow of current in case of overloading. C. Safety devices are used to provide alternative route for current in the case of a grounded circuit. D. Safety devices supply unsteady amount of voltage to protect appliances against overloading.
23. The fuse at home has "blown up many times. Which of the following must NOT be done to solve the problem and prevent it from happening again? A. Buy fuse with standard amperage rating. B. Do not use all appliances simultaneously. C. Call your barangay electrician to fix your electrical problem. D. Use jumper wire or cover the blown fuse with available silver paper.
24. Which electrical device shuts down when there is overloading in the circuit?? A. fuse B. voltage source C. circuit breaker D. electrical switch
25. Which electrical device blows up when there is overloading in the circuit? A. fuse B. switch C. resistor D. circuit breaker
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