Module 4- Electrical Circuits

What happens to current across components of a series circuit?

Same across all components

What happens to current across components of a parallel circuit?

Current splits at a junction

What happens to voltage across components of a series circuit?

Shared between components

What happens to voltage across components of a parallel circuit?

Same across whole circuit

What is Kirchoff’s Second Law?

Sum of electromotive force in a closed loop is equal to the sum of the potential differences

What is conserved in Kirchoff’s Second Law?

Energy

In a circuit diagram, how can you tell which side of a cell is positive?

Taller line =positive

How do you calculate resistance in a series circuit?

Add up all the resistance of all the components

How do you calculate the overall resistance in a parallel circuit?

1/R₁ +1/R₂=1/R_T

What is internal energy?

Lost volts per unit current

What is terminal potential difference?

The measured potential difference across the terminal of the cell

What is one equation to calculate emf?

emf= terminal voltage + lost volts

What is a potential divider circuit?

A circuit that divides voltage