On an automatic temperature control system the blower motor circuit resistence is specified at 2.0 to 3.5 ohms.If the resistence in the circut falls to 1.5 ohms which of the following will be the most likely result?
A) High current flow in the blower motor circuit.
B) Low current flow in the blower motor circuit.
C) The blower motor will spin faster than designed.
D) The blower motor will spin slower than designed.

Question

Quizplus · Accepted Answer

When the resistance in the circuit falls to 1.5 ohms, the current flow in the blower motor circuit will increase because of Ohm's law (I=V/R). As a result, there will be a high current flow in the blower motor circuit, which could cause damage to the circuit or motor.

On an Automatic Temperature Control System the Blower Motor Circuit