Physics: Electrodynamics?
Hello, I'm really stuck. Could you help me? And maybe check if I've done the exercises correctly. I'm really not sure. Thanks in advance.
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1) is correct
2)
Here you have to distinguish whether the switch is open or closed.
When the switch is open, lamp 1 lights up in B and lamp 2 in C. In the other circuits, no lamp lights up.
When the switch is closed, all lamps light up (for all six circuits).
3)
On the left is an OR circuit. The lamp lights up when at least one switch is closed.
On the right is an AND circuit. The lamp lights up when all switches are closed.
Thank you, you really helped me, I understand it now thanks to you, could you take a look at my addition to the post and check again whether everything is correct now?
The 2) is now correct. (The switch is open.)
3) is only correct on the right. On the left, the lamp lights up when switch 1 or switch 2 (or both) is closed. The lamp is only off when both switches are open.
A hint to correctly understand the given answers:
" Closed " means that the current can flow.
" Open " means that the current cannot flow.
In electrical engineering jargon, the meaning of these two words is reversed, like a door! You can't walk through it when it's closed, but only when it's open.
(It's strange that electrical engineering terminology expresses this differently than everyday language. Perhaps it has something to do with the fact that the symbol for a switch looks similar to what you would draw if you were to draw a door on a floor plan. Perhaps the words were adopted from this context without paying attention to the changed meaning.)
But this is really primordial ooze.
Electricity can only flow when a circuit is closed, then the lamp lights up, otherwise of course not and then no lamp lights up.
In case of 2 you have an error in circuit diagram A, D.
You completely forgot about 3. Circuit diagram 3: parallel circuit, circuit diagram 4: series circuit.
Same story: when the circuit is closed, the lamp lights up. When the switches are connected in parallel, one switch is sufficient. When connected in series, both switches must be closed.
Do you roll the dice to find the solutions?
Why do you have different solutions for D, E, and F? What do you see as the difference? Just this: when the switch is open, all the lights are off.