Physics- electricity

• What are the two types of electric charges?

  Positive and negative
• What happens when like charges interact?

  Like charges repel each other
• What happens when unlike charges interact?

  Unlike charges attract each other
• What are the key terms related to electricity that should be used correctly?

  • Atom
  • Nucleus
  • Electron
  • Proton
  • Neutron
• How would you describe the structure of an atom?

  An atom consists of a nucleus surrounded by electrons
• How does an object become negatively charged?


  By adding electrons
• How does an object become positively charged?


  By removing electrons
• If an object has gained electrons, what type of charge does it have?

  It is negatively charged
• If an object has lost electrons, what type of charge does it have?

  It is positively charged
• How would you solve a problem involving charging an object?

  By applying the principles of electron gain or loss
• How does a Van De Graff generator charge objects?

  It charges objects through the movement of electrons
• What is the role of a cell, battery, or power supply in an electric circuit?

  They push electrons to make a current flow
• How is current measured in an electric circuit?

  In amps using an ammeter connected in series
• What does the voltage of a supply measure?

  It measures the energy given to each electron
• How is voltage across a component measured?

  In volts using a voltmeter connected in parallel
• What is true about the current through components in series?

  The current is the same through all components
• What is true about the sum of currents in parallel branches?

  The sum of the currents in parallel branches is equal to the supply current
• What is the topic of the second section in the study material?


  Static Electricity