Potential Dividers Cambridge A Level Past Paper Questions

What is the formula for calculating potential difference in a circuit?

• V = I * R

• V = I + R

• V = I / R

• V = I - R

How do you determine resistance in a potential divider?

• Use the formula R = (Vout / I) * (R1 / (R1 + R2))

• Ask a friend to guess the resistance

• Count the number of resistors in the circuit

• Measure the temperature of the resistors

Solve the potential divider circuit problem: A circuit has a 12V battery and two resistors of 4Ω and 8Ω connected in series. What is the potential difference across each resistor?

• 4V and 8V

• 6V and 6V

• 10V and 2V

• 2V and 10V

Explain the concept of voltage division in a potential divider.

• The concept of voltage division in a potential divider involves the proportional distribution of voltage across different resistors in a series circuit.

• The concept of voltage division involves increasing the voltage across different resistors in a series circuit

• Voltage division only occurs in parallel circuits, not in series circuits

• Voltage division in a potential divider results in equal voltage distribution across all resistors

Apply the potential divider equations to find the output voltage in a circuit with a 24V input and two resistors of 6Ω and 12Ω.

• 10V

• 12V

• 18V

• 6V

What is the relationship between the input voltage, resistance, and output voltage in a potential divider circuit?

• Output voltage is directly proportional to the input voltage and inversely proportional to the resistance.

• Output voltage is directly proportional to the input voltage and directly proportional to the resistance.

• Output voltage is inversely proportional to the input voltage and inversely proportional to the resistance.

• Output voltage is directly proportional to the input voltage and has no relationship with the resistance.

Calculate the potential difference in a circuit with a 10V input and two resistors of 3Ω and 6Ω connected in parallel.

• 10V

• 5V

• 15V

• 2V

If a potential divider circuit has an input voltage of 15V and two resistors of 5Ω and 10Ω, what is the output voltage?

• 10V

• 7V

• 5V

• 3V

Determine the resistance needed in a potential divider circuit to achieve a specific output voltage with a given input voltage and resistor value.

• R = (Vout * R2) / (Vin + Vout)

• R = (Vout * R2) / (Vin - Vout)

• R = (Vout - R2) / (Vin - Vout)

• R = (Vout + R2) / (Vin - Vout)

Explain how potential dividers are used in electronic circuits to provide a specific output voltage.

• Potential dividers have no effect on the input voltage

• Potential dividers randomly change the input voltage to a specific output voltage

• Potential dividers multiply the input voltage to provide a specific output voltage

• Potential dividers divide the input voltage into a specific output voltage by using resistors in series.