Recent content by anonymousZ10

I'm still trying to figure out what happens when the switch is opened. lol

well basically, voltage(potential difference) is equals to work done per unit charge. That means the amount of work done required to move a charge from one point to another point. That why it is called potential DIFFERENCE . To make things easier, there's an equation where V = W/Q. So, if you...

i've checked the answer just now, guess what, the right answer is B :D Would you care to help me find the reason why is this I just don't get it

1. Homework Statement Based on what I've got, i guess the answer is A. However, I'm not quite sure of myself. From what I can see coil Y has its own magnetic field because current is flowing in that coil. When there's a flow of current there will be a magnetic field around it. Thus, placing...

Ah ! now i get it. why the L.E.D flashes once. Thanks

thank you :D

can we still induced e.m.f in a circuit if we switch on and off the circuit. Well, since induced e.m.f is proportional to the rate of change of magnetic flux. I guess alternating the switches can changes the magnetic flux of a circuit. Please correct me if I'm wrong ^_^ .