potential difference

• the amount of energy per coulomb and is measured in volts
• can be though as the push which gets the charge to move through wires and components
• potential difference = work done / charge
• work done = force x distance moved
• potential difference = energy / charge
• what does the voltmeter do?

  measures the P.D / voltage from one point to another
• what happens if u use the voltmeter backwards?

  it produces the same amount of volts but if will change charge
• what happens if u measure the P.D across two identical cells?

  doubles the amount of P.D measured