GCSE Physics Revision "Current in Series Circuits" Unit 4

Chapter 1: Introduction

• Objective: Describe what's meant by a series circuit and by an electric current

• Concepts in the electricity topic can be tricky

• May need to watch videos multiple times to understand

Chapter 2: Electric Circuits

• Scientists use symbols to represent components in electric circuits

• First four symbols: cell, open switch, closed switch

• Components arranged in a simple electric circuit

• Connecting lines represent wires in the circuit

Chapter 3: Electric Current

• When switch is closed, electrons flow out of the cell and move around the circuit

• Flow of electrons is called an electric current

• Current flows from negative end of the cell to positive end

• Electrons carry energy from the cell and pass it to components in the circuit

• Electrical energy is transferred to light energy and thermal energy

• Electric current is represented using an arrow

• Current is drawn from positive end to negative end, even though it's incorrect

• Circuit in the transcript is a series circuit with no branches

Chapter 4: Measurement of Current

• Unit of electrical current is called ampere (symbol: A)

• Current can be measured using an ammeter

• Ammeter symbol is important to learn

• Current in a series circuit is the same all the way around

• Current is never used up in a circuit

Chapter 5: Conclusion

• Recap of what's meant by a series circuit and electric current

• Ability to describe the pattern of current flow in a series circuit