Physics p1

• What is electric current?


  Electric current is the flow of electric charge through a conductor.
• How is electric current measured?


  Electric current is measured in amperes (A).
• What is potential difference also known as?

  Potential difference is also known as voltage.
• What does potential difference measure?


  Potential difference measures the energy transferred per unit charge between two points in a circuit.
• How is potential difference measured?


  Potential difference is measured in volts (V).
• What is the relationship between amperes and coulombs?


  1 ampere = 1 coulomb of charge per second.
• In a simple circuit with a 9V battery, what is the potential difference across the battery terminals?


  The potential difference across the battery terminals is 9 volts.
• What is resistance in a circuit?


  Resistance is the opposition to the flow of electric current in a circuit.
• How is resistance measured?


  Resistance is measured in ohms (Ω).
• What factors affect resistance in a circuit?


  Resistance depends on material, length, cross-sectional area, and temperature of the conductor.
• What happens to resistance if the length of a wire increases?


  Longer wires have more resistance.
• How does the cross-sectional area of a wire affect resistance?


  Thicker wires have less resistance.
• How does temperature affect resistance in most materials?


  For most materials, resistance increases with temperature.
• What is Ohm's law?


  Ohm's law describes the relationship between voltage, current, and resistance.
• What is the formula for Ohm's law?


  $V =$$I \times R$
• How can Ohm's law be rearranged to solve for current?


  $I =$$\frac{V}{R}$
• What is the extract from Macbeth that is discussed in the lesson?


  Act 1, Scene 7 (Macbeth's soliloquy)
• What is the context of Macbeth's soliloquy in Act 1, Scene 7?


  It occurs just before the murder of King Duncan, revealing Macbeth's inner turmoil and ambition.
• What does Macbeth's soliloquy reveal about his state of mind?

  It reveals his internal conflict, weighing the consequences of murdering Duncan.
• What are the key elements in Macbeth's soliloquy from Act 1, Scene 7?

  • **Imagery**: "bank and shoal of time" - metaphor for life.
  • **Syntax**: Conditional statements show hesitation.
  • **Diction**: Words like "assassination" emphasize gravity.
  • **Rhythm**: Irregular rhythm mirrors his unsettled mind.