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I have two quick questions about how light bulbs (or any resistor) react in (DC) circuits, as my book's not being very helpful.
A) If a light bulb is removed from its socket, ceteris paribus, does current stop flowing through the socket apparatus entirely, and if it precedes all other elements in a circuit, will it therefore cut current to the rest of the circuit? I'm pretty sure that the potentials will all still be there, correct? I mean, that's why you don't stick your finger in the socket when the switch is still on--you don't want to complete the circuit, right? :)
B) Two identical bulbs are connected in series to a DC emf. If a single Earth ground connection is placed between the two bulbs, why are they not affected? I think I'm misunderstanding how ground wires work. I understand from the facts I'm given that the ground wire can't suck up all of the electrons because some are still obviously reaching the wire, but why is this? Is there not a junction made here with one path leading toward zero potential, which is the preferred state? It's very confusing because it's not an electrostatic situation.
Thanks for any answers to this stuff. :)
A) If a light bulb is removed from its socket, ceteris paribus, does current stop flowing through the socket apparatus entirely, and if it precedes all other elements in a circuit, will it therefore cut current to the rest of the circuit? I'm pretty sure that the potentials will all still be there, correct? I mean, that's why you don't stick your finger in the socket when the switch is still on--you don't want to complete the circuit, right? :)
B) Two identical bulbs are connected in series to a DC emf. If a single Earth ground connection is placed between the two bulbs, why are they not affected? I think I'm misunderstanding how ground wires work. I understand from the facts I'm given that the ground wire can't suck up all of the electrons because some are still obviously reaching the wire, but why is this? Is there not a junction made here with one path leading toward zero potential, which is the preferred state? It's very confusing because it's not an electrostatic situation.
Thanks for any answers to this stuff. :)