47. A thermos bottle is commonly used for keeping hot water hot. If cold water is placed instead of hot water, will it also remain cold?
A. No, the thermos bottle will keep the heat in and not the cold.
B. No, the thermos bottle was not designed to keep the cold in.
C. Yes, the thermos will keep the cold water from absorbing heat from the outside.
D. Yes, glass is a poor conductor and will prevent the cold from getting out.
48. What will happen to the current if we will increase the resistance?
A. decreases
C. the same
B. increases
D. becomes zero
49. Which of the following statement is TRUE about series connection?
A. Decreasing the load, resistance will increase.
B. Increasing the load, resistance will increase.
C. Increasing the load, resistance will decrease.
D. Increasing the load, resistance is constant.
50. Which of the following statements is TRUE?
A. current increases when voltage increases
B. current decreases when voltage increases
C. current increases when voltage decreases
D. current is not affected by the voltage