C3

• What is Kirchhoff’s first law?

  the sum of currents entering a junction is equal to the sum of currents leaving a junction
• What is Kirchhoff’s second law

  In any closed loop, the sum of the e.m.f is equal to the sum of the P.Ds dissipated around the circuit (loop)
• K1 and K2 are conservations of what?

  K1: charge K2: energy
• Define internal resistance

  The resistance of the materials within the battery
• What is the equation for potential dividers

  v-out = v-in x R1/(R1 + R2)
• What is Electro Motive Force (e.m.f)?

  The energy gained per unit charge when passing through a supply (cell)