Relays

we were doing practical exercises on relays, we began reading though our notes and sample wiring diagram on how each relay works on the fuel pump in the circuit,we then did some excercise with the basics and wiring up the relays in circuits with 3 bulbs and in parallel circuit, we also did some measurements like the avaliable voltage from the circuit when its off and on. and from our result, we found that when the circuit is off there are no components using any voltage from power supply and when the circuit is on some voltage is used on the relay to charge up the internal magnet and on our results the terminal 85 has 0.14v avaliable, the bulb is connected to the terminal 85 after the consumers are connected to the parallel,atlast we draw some wiring diagram with a relay to switch with 2 lights and to the swtich of high beam and low beam.