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This quiz contains 5 questions from a mix of 1 subtopics.

Circuit diagram showing a potential divider with a 9V battery, a 40 ohm resistor, a 60 ohm resistor, and voltmeters V1 and V2.

Which of the following shows the correct readings for the voltmeter readings?

V1 = 3 V    and V2 = 6 V

V1 = 4.5 V    and V2 = 4.5 V

V1 = 3.6 V    and    V2 = 5.4 V

V1 = 9 V    and V2 = 0 V

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1

Circuit diagram showing a potential divider with a 10V battery, a 50 ohm resistor, a variable resistor, and a voltmeter.

What happens to the voltmeter reading as the variable resistor increases in resistance?

voltmeter reading decreases

voltmeter reading stays the same

voltmeter reading increases

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1

Circuit diagram showing a 10V battery, a 50 ohm resistor, a variable resistor, and a voltmeter.

The resistance of the variable resistor is 75 Ω. Which of the following represents the voltmeter reading?

7 V

6 V

4 V

10 V

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1

Which of the following best describes a potential divider?

A device that divides electrical energy

A system that separates charges

A component that splits potential difference

A circuit that distributes current evenly

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1

Which of the following is a common application of potentiometers?

Controlling the speed of a motor

Measuring heart rate in a fitness tracker

Adjusting screen brightness on a smartphone

Monitoring air pressure in a weather station

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2