WEEK 13 problem solved

we check every thing, later we talked with our tutor the problem is coming the transistor.

we need to use the BC 547 to contro the relay and use the relay to load the bulb.

in the circuit you need the relay to load the bulb, because the high current, which will reach to 1A to 5A or evern more the transistor can not hand it.
after we use the transistor BC547 and the relay, the circuit is working.