Current in Series Circuits

• What is an electric current?

  An electric current is the flow of electrical charge around a circuit.
• What is meant by a series circuit?

  A series circuit is a circuit with no branches where current flows in one path.
• What is the pattern of current flow in a series circuit?

  The current is the same all the way around the circuit.
• What are the first four symbols used to represent components in electric circuits?

  The symbols are for a cell, a lamp, an open switch, and a closed switch.
• What components are arranged in a simple electric circuit?

  • One cell
  • One open switch
  • One lamp
  • Connecting wires
• What happens when the switch in a circuit is closed?

  Electrons flow out of the cell and move around the circuit.
• In which direction do electrons flow in a circuit?

  Electrons flow from the negative end of the cell to the positive end.
• What do electrons carry from the cell to the components in the circuit?

  Electrons carry energy from the cell to the components.
• What type of energy is transferred to the lamp in the circuit?

  Electrical energy is transferred to light energy and thermal energy in the lamp.
• What happens to the energy of electrons when they return to the positive end of the cell?

  They carry less energy than when they left the negative end.
• How is electric current usually represented?

  Electric current is usually represented using an arrow.
• What is the conventional current direction in a circuit?

  The conventional current is drawn from the positive end of the cell to the negative end.
• What is the unit of electrical current?

  The unit of electrical current is called the Ampere.
• What is the symbol for Ampere?

  The symbol for Ampere is capital A.
• What is the reading of the ammeter in the circuit?

  The ammeter reads a current of 0.1 amp.
• What is an ammeter used for?

  An ammeter is used to measure the current in a circuit.
• What happens when another ammeter is placed in the circuit?

  The second ammeter also reads a current of 0.1 amp.
• Where can you find questions on electric current and series circuits?

  You can find questions in the vision workbook.
• What is a key point about current in a series circuit?

  Current is never used up in a circuit; it remains the same all the way around.