LSAT 134 – Section 2 – Question 07

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PT134 S2 Q07
+LR
+Exp
Most strongly supported +MSS
Analogy +An
A
81%
164
B
5%
155
C
3%
151
D
1%
151
E
11%
161
128
142
156
+Medium 146.032 +SubsectionMedium

Inertia affects the flow of water pumped through a closed system of pipes. When the pump is first switched on, the water, which has mass, takes time to reach full speed. When the pump is switched off, inertia causes the decrease in the water flow to be gradual. The effects of inductance in electrical circuits are similar to the effects of inertia in water pipes.

Summary
Inertia affects the rate water flows through closed systems of pipes. When the pump is turned on, the water takes time to reach full speed. When the pump is turned off, inertia causes the water to gradually slow down. Inductance affects electrical circuits similarly to how inertia affects water in pipes.

Strongly Supported Conclusions
Inductance affects the rate electricity flows through electrical circuits.

A
The rate at which electrical current flows is affected by inductance.
Given that the effects of inductance are similar to the effects of inertia, inductance must affect electrical currents in a similar way to how inertia affects the flow of water.
B
The flow of electrical current in a circuit requires inertia.
We don’t know whether electrical currents require inertia. We only know that the effects of inductance are similar to the effects of inertia.
C
Inertia in the flow of water pumped by an electrically powered pump is caused by inductance in the pump’s circuits.
We don’t know what causes inertia in pipe systems. We only know that inertia affects the flow of water in pipes.
D
Electrical engineers try to minimize the effects of inductance in electrical circuits.
We don’t know what electrical engineers try to do.
E
When a water pump is switched off it continues to pump water for a second or two.
We don’t know for what amount of time water flows after a pump is turned off. We only know that the flow of water stops gradually, and gradually could refer to an ambiguous amount of time.

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