4 (563B)
1 the sum of currents into a node = the sum of currents exiting the node - kirchoffs first law 2 the sum of the emf equals the sum of the potential differences across a loop - kirchoffs second law 3 4 the emf is the voltage across a power supply 5 6 remember that when a wire splits into 2 parralel branches its current splits while the voltage stays the same 7 8 this is because voltage is a mesure of energy per unit of charge, which wouldn't change because each electron has the same charge. 9 the current splits because its a way of messuring the amount of charge flowing 10