Last updated on Sep 22, 2026

23.1 – Investigating Current and Voltage in a Filament Lamp (Leaving Cert Physics): Quizzes

23.1 – Investigating Current and Voltage in a Filament Lamp

Practise the questions

12 questions from this quiz

Non-ohmic conductor

In series with the bulb

In parallel with the bulb

To control voltage and current

It is relatively low

It increases due to heating

Atoms vibrate more, impeding electrons

Higher resistance limits current rise

Creates a short circuit

Resistance at that operating point

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23.1 – Investigating Current and Voltage in a Filament Lamp (Leaving Cert Physics): Quizzes

Practise the questions

What type of conductor is a filament lamp?

What shape is the current-voltage graph for a filament lamp?

How must the ammeter be connected in this circuit?

How must the voltmeter be connected in this circuit?

What is the purpose of the variable resistor (rheostat) in this experiment?

On the I-V graph, which variable should be plotted on the y-axis?

At low voltages, what happens to the filament lamp's resistance?

What happens to the filament's resistance as voltage increases?

Why does the tungsten filament's resistance increase at higher temperatures?

Why does the I-V curve flatten at higher voltages?

What happens if you connect the ammeter in parallel with the bulb?

Using the formula R=VIR = \frac{V}{I}R=IV​, what can you calculate at any point on the graph?

Explore Leaving Cert Physics Revision Notes by Topics

3.1 – Calculations of Refraction of Light

3.1 – Calculations of Refraction of Light

3.2 – Measuring the Critical Angle and Refractive Index

3.2 – Measuring the Critical Angle and Refractive Index

4.1 – Verifying the Lens Equation

4.1 – Verifying the Lens Equation

5.1 – Investigating Constant Velocity Using a Trolley or Rider

5.1 – Investigating Constant Velocity Using a Trolley or Rider

6.1 – Investigating Accelerated Motion Using a Trolley or Rider

6.1 – Investigating Accelerated Motion Using a Trolley or Rider

6.2 – Determining Acceleration Due to Gravity

6.2 – Determining Acceleration Due to Gravity

6.3 – Determining Acceleration Due to Gravity Using a Simple Pendulum

6.3 – Determining Acceleration Due to Gravity Using a Simple Pendulum

7.1 – Verifying the Law of Vector Addition

7.1 – Verifying the Law of Vector Addition

6.1 – Investigating Accelerated Motion Using a Trolley or Rider

6.1 – Investigating Accelerated Motion Using a Trolley or Rider

6.2 – Determining Acceleration Due to Gravity

6.2 – Determining Acceleration Due to Gravity

6.3 – Determining Acceleration Due to Gravity Using a Simple Pendulum

6.3 – Determining Acceleration Due to Gravity Using a Simple Pendulum

7.1 – Verifying the Law of Vector Addition

7.1 – Verifying the Law of Vector Addition

8.1 – Investigating Force, Mass and Acceleration Relationships

8.1 – Investigating Force, Mass and Acceleration Relationships

8.2 – Investigating Conservation of Momentum

8.2 – Investigating Conservation of Momentum

9.1 – Determining Acceleration Due to Gravity

9.1 – Determining Acceleration Due to Gravity

10.1 – Investigating Conservation of Energy on a Ramp

10.1 – Investigating Conservation of Energy on a Ramp

12.1 – Investigating Work and Energy in Stretching or Compression

12.1 – Investigating Work and Energy in Stretching or Compression

12.2 – Verifying Hooke’s Law

12.2 – Verifying Hooke’s Law

13.1 – Investigating Alcohol as a Thermometer Liquid

13.1 – Investigating Alcohol as a Thermometer Liquid

14.1 – Determining the Specific Heat Capacity of a Liquid

14.1 – Determining the Specific Heat Capacity of a Liquid

14.2 – Determining the Latent Heat of Fusion and Vaporisation

14.2 – Determining the Latent Heat of Fusion and Vaporisation

16.1 – Verifying the Stretching of a Spring (Tension Model)

16.1 – Verifying the Stretching of a Spring (Tension Model)

17.1 – Measuring the Wavelength of Light

17.1 – Measuring the Wavelength of Light

22.1 – Investigating Current and Voltage Relationships

22.1 – Investigating Current and Voltage Relationships

22.2 – Investigating Resistance in Series and Parallel

22.2 – Investigating Resistance in Series and Parallel

22.3 – Investigating the Effect of Temperature on Resistance

22.3 – Investigating the Effect of Temperature on Resistance

23.1 – Investigating Current and Voltage in a Filament Lamp

23.1 – Investigating Current and Voltage in a Filament Lamp

24.1 – Investigating Current and Voltage in a Semiconductor Diode

24.1 – Investigating Current and Voltage in a Semiconductor Diode

Explore Leaving Cert Physics Model Answers by Topics

3.1 – Calculations of Refraction of Light

3.1 – Calculations of Refraction of Light

3.2 – Measuring the Critical Angle and Refractive Index

3.2 – Measuring the Critical Angle and Refractive Index

4.1 – Verifying the Lens Equation

4.1 – Verifying the Lens Equation

5.1 – Investigating Constant Velocity Using a Trolley or Rider

5.1 – Investigating Constant Velocity Using a Trolley or Rider

Using the formula $R = \frac{V}{I}$ , what can you calculate at any point on the graph?