Question

1. voltage dividers can be used to provide which of the following functions?

voltage dividers are commonly used to achieve a desired circuit current.

voltage dividers can be used to achieve any desired voltage in a series circuit.

voltage dividers are used to change the speed of large industrial motors.

voltage dividers are used as a risk mitigation strategy by safety professionals.

Explanation:

Define voltage divider function

Using the Series Circuits knowledge point
A voltage divider is a simple passive linear circuit that produces an output voltage that is a fraction of its input voltage. It distributes the total voltage across series components.

Analyze the given options

• Option 1 suggests controlling circuit current, which is primarily the role of current limiters or series resistors, not the primary defining function of a divider.
• Option 2 states they achieve any desired voltage in a series circuit by tapping across specific resistors. This matches the fundamental definition.
• Option 3 mentions industrial motor speed control, which requires heavy-duty power controllers (like VFDs), not simple signal-level voltage dividers.
• Option 4 mentions safety risk mitigation, which is unrelated to the primary electrical function of a voltage divider.

Answer:

• Voltage dividers are commonly used to achieve a desired circuit current.
• Voltage dividers can be used to achieve any desired voltage in a series circuit. (Correct answer)
• Voltage dividers are used to change the speed of large industrial motors.
• Voltage dividers are used as a risk mitigation strategy by safety professionals.