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Lesson: Using Potential Dividers

Worksheet • 11 Questions

Q1:

What type of electronic component could be used instead of one of the resistors in a potential divider to create a light-sensing circuit?

  • AA light-dependent resistor
  • BA diode
  • CA thermistor
  • DAn LED
  • EA fuse

Q2:

Chloe creates the potential divider shown in the diagram. 𝑅  has a value of 30 Ξ©, and 𝑅  has a value of 90 Ξ©. What ratio of output voltage to input voltage does this produce?

Q3:

Isabella has a light bulb that requires a 12 V potential difference across it in order to work. She only has an 18 V battery to power it. Which of the following pairs of resistors can be used to create a potential divider to power the light bulb?

  • A 10 kΞ© and 5 kΞ©
  • B 48 Ξ© and 36 Ξ©
  • C 12 kΞ© and 2 kΞ©
  • D 200 Ξ© and 500 Ξ©
  • E 8 kΞ© and 6 kΞ©

Q4:

A potential divider has an input voltage of 48 V. The resistance of the second resistor, 𝑅 2 , is 100 kΞ©. The output voltage is drawn across the second resistor, 𝑅 2 . What resistance must the first resistor, 𝑅 1 , have in order to produce an output voltage of 32 V?

Q5:

A potential divider has an input voltage of 36 V. The resistance of the first resistor, 𝑅 1 , is 48 Ξ©. The output voltage is drawn across the second resistor, 𝑅 2 . What resistance must the second resistor have in order to produce an output voltage of 18 V?

Q6:

A potential divider consists of two resistors, 𝑅 1 and 𝑅 2 . The resistance of 𝑅 1 is 200 Ξ©, and the resistance of 𝑅 2 is 400 Ξ©. The output voltage is drawn across 𝑅 2 . What input voltage is needed to produce an output voltage of 12 V?

Q7:

The diagram shows a circuit for a potential divider. The value of 𝑅  is 24 kΞ©. The value of 𝑅  is 32 kΞ©. What input voltage is needed to produce an output voltage of 8 V?

Q8:

The diagram shows a circuit for a potential divider. If the input voltage, 𝑉 i n , is 30 V, what value of 𝑅 2 is needed to produce an output voltage of 20 V?

Q9:

A potential divider has an input voltage of 24 V. The resistance of the first resistor, 𝑅 1 , is 25 Ξ©. The resistance of the second resistor, 𝑅 2 , is 75 Ξ©. The output voltage is drawn across the second resistor. What is the value of the output voltage?

Q10:

The diagram shows a circuit for a potential divider. If the input voltage is 12 V, what value of 𝑅 1 is needed to produce an output voltage of 4 V?

Q11:

The diagram shows a circuit for a potential divider. If the input voltage, 𝑉 i n , is equal to 15 V, what is the value of the output voltage, 𝑉 o u t ?

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