2.1.1 Electric Current

• What is electric current defined as?

  Rate of flow of charge
• The units of electric current are amperes
• The relationship between current, charge, and time is given by the formula $I =$$\frac{Q}{t}$
• What does the symbolI</latex> represent in the equation $I =$$\frac{Q}{t}$?


  Current in amperes
• Current is a scalar quantity.
• Match the property with its description:

  Current ↔️ Rate of flow of charge

  Potential Difference ↔️ Difference in electric potential
• What is one ampere equal to?

  One coulomb per second
• The symbol for electric current is A
• What is current measured in?

  Amperes
• If 20 coulombs of charge flow through a wire in 5 seconds, the current is 4 amperes.
• What are the units for measuring electric charge and time, respectively?

  Coulombs and seconds
• The unit for current is amperes
• Current is a scalar quantity because it has magnitude but no direction.
• If a charge of 20 coulombs flows through a wire in 5 seconds, what is the current flowing?

  4 amperes
• Match the quantity with its definition:

  Electric Current ↔️ Rate of flow of charge

  Potential Difference ↔️ Difference in electric potential
• What is the formula for electric current in terms of charge and time?

  $I =$$\frac{Q}{t}$
• Charge is measured in coulombs
• If a charge of 30 coulombs flows through a wire in 6 seconds, what is the electric current?

  5 amperes
• In a circuit, charge flows from the negative terminal to the positive terminal of a power source.
• What is the relationship between current, charge, and time?

  $I =$$\frac{Q}{t}$
• Current is measured in amperes
• If a charge of 20 coulombs flows through a wire in 5 seconds, what is the current flowing?

  4 amperes
• Electron flow moves from the negative to the positive terminal.