Refer to the simplified drawing of a control rod position detector circuit (see figure below).
A magnet on the control rod extension (or drive) shaft sequentially closes individual reed switches mounted vertically adjacent to the control rod drive housing.
A constant +5 DC volts is supplied to the input of the resistor network at resistor R1.
A control rod is initially fully inserted such that all reed switch contacts are open; then the rod is withdrawn until reed switch contact S1 is closed.
Compared to the initial circuit currents, the current through resistor R5 after the rod withdrawal will be __________; and the output current of the resistor network to the amplifier will be __________.
A. lower; higher
B. lower; lower
C. higher; higher
D. higher; lower
Show Answer
Answer: A
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