select the correct answer. which statement is true? a. a resistor alters current, and a switch turns current…

select the correct answer. which statement is true? a. a resistor alters current, and a switch turns current on and off. b. a resistor measures voltage, and a switch changes ac to dc or dc to ac. c. a resistor alters current, and a switch measures voltage. d. a resistor changes ac to dc or dc to ac, and a switch turns current on and off.

select the correct answer. which statement is true? a. a resistor alters current, and a switch turns current on and off. b. a resistor measures voltage, and a switch changes ac to dc or dc to ac. c. a resistor alters current, and a switch measures voltage. d. a resistor changes ac to dc or dc to ac, and a switch turns current on and off.

Answer

Explanation:

Step1: Recall resistor function

A resistor resists the flow of electric - current and can alter the amount of current in a circuit according to Ohm's law ($V = IR$).

Step2: Recall switch function

A switch is a device that can open or close an electrical circuit, turning the current on or off.

Step3: Analyze options

  • Option A: A resistor alters current, and a switch turns current on and off. This is correct.
  • Option B: A resistor does not measure voltage (a volt - meter measures voltage), and a switch does not change AC to DC or vice - versa (a rectifier changes AC to DC and an inverter changes DC to AC).
  • Option C: A switch does not measure voltage.
  • Option D: A resistor does not change AC to DC or DC to AC.

Answer:

A. A resistor alters current, and a switch turns current on and off.