The discovery of the electron exam tips

Exam tips

• Calculate Specific Charge

  To calculate the specific charge of an electron, use the formula: specific charge = charge / mass.

  This helps you understand the relationship between charge and mass, which is crucial for determining the properties of electrons in electric and magnetic fields.

• Link result to conclusion in Specific charge of the electron

  Link result to conclusion first, then connect it to Discuss experimental uncertainty in specific charge measurements. using one named experiment, one observation and one physics conclusion.

  Turning Points answers need evidence-based reasoning: method, observation, conclusion and why the older model is limited.

• Explain the quantum condition in Millikan's determination of electronic ch?

  Explain the quantum condition first, then connect it to Describe the principle of Millikan's oil-drop experiment. using one named experiment, one observation and one physics conclusion.

  Turning Points answers need evidence-based reasoning: method, observation, conclusion and why the older model is limited.

• Understanding Charge Values from Force Balance

  When explaining how force balance gives charge values in Millikan's oil-drop experiment, clearly outline the forces acting on the droplet and how they relate to charge.

  This helps solidify your understanding of the relationship between electric force, gravitational force, and charge, which is crucial for accurately describing the experiment's principles.

• Use the graph feature in Millikan's determination of electronic ch?

  Use the graph feature first, then connect it to Explain evidence for quantisation of charge. using one named experiment, one observation and one physics conclusion.

  Turning Points answers need evidence-based reasoning: method, observation, conclusion and why the older model is limited.

• Understanding Electronic Charge

  To link electronic charge to specific charge and electron mass, use the formula for specific charge: specific charge = charge / mass.

  This helps clarify the relationship between charge and mass, reinforcing the concept of specific charge in the context of electrons.