Passage VI

Figure 1 shows the relative ground elevation at Sites A-D in an earthquake-prone area, measured over 30 yr. Relative ground elevation is the vertical distance above or below the nearest benchmark (location of known, fixed elevation). Figure 2 shows the resistivity (which is directly proportion to the resistance to the flow of electrical current) of the bedrock in the same area, measured over 8 months (mo) in 1996. Figure 3 shows the level of the radon (a radioactive gas) emissions from well water in the same area, measured over 8 yr. The time at which an earthquake occurred in the area is indicated in all 3 figures.

34. Two cylindrical resistors were identical except for their material of construction. Resistor A was made from bedrock identical to the bedrock in the study area in May 1996. Resistor B was made from bedrock identical to the bedrock in the study area in July 1996. Each resistor was inserted, one at a time, in the following circuit.

The electrical current in the circuit was greater when which resistor was in the circuit?

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

General knowledge questions.

Looking at figure 2, we can know that the resistance of A is greater than that of B. According to the formula I=U/R, the smaller the resistance, the stronger the current, so the current of B is stronger