Circuit, PD and Resistance

• Electric current is a flow of electric charge.
• A bigger current means faster flow, a Smaller current means slower flow.
• Charge Flow = Current x Time

  A) Current

  
• In a series circuit, the current is equal.
• when you add a resistor in parallel, the overall resistance decreases
• Potential difference = current × resistance
• current = potential difference / resistance
• Potential difference in a parallel circuit is the same across each branch.
• Diodes only allow current to flow 1 direction.
• Ammeters are added to circuits in series.
• Batteries are two or more cells
• In current the electrons always goes from positive to negative
• Potential difference the force that causes the electrons to flow