electricity and magnesium

• current is the amount of charge flowing per second it is measured using an ammeter
• Resistance prevents the charge flow flowing and its caused by the atoms in the conductor
• Potential difference is the push that causes the charge to flow. Potential difference also tells us how much energy is being transferred. it’s measured with a voltmeter
• Opposite charges attract
• Like charges repel
• Resistance = potential difference/ current
• Resistance is measured in Ω (ohms)
• potential difference is measured in volts V
• current is measured in Amps A
• current - number of electrons moving around
• Series circuits:

  •current is the same everywhere

  •potential difference of the battery is shared between the components
• Parallel circuits:

  •current splits at a junction

  •the potential difference across each loop Is the same as the potential difference of the battery